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Sierra club Interview Questions and Answers
Ques:- A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that all the four bulbs are defective?
Asked In :-
Right Answer:
The probability that all four bulbs chosen are defective is 0.003.
Ques:- In a certain company, 20% of the men and 40% of the women attended the annual company picnic. If 35% of all the employees are man, what percent of all the employees went to the picnic?
Asked In :-
Comments
Admin May 17, 2020

Answer is 33%
{35 % of all the employees are men.
so 65 % (100-35) of all the employees are women.
35*20%=7% of the men attended the annual company picnic and
65*40%=26% of the women attended the annual company picnic.
so 33%(7+26) of all the employeeswent to the picnic.}

Admin May 17, 2020

men - 20% 0f total 35% is 7% of all employees
women - 40% of total 65% is 26% of all employees
so total (26+7)=33% employees went 2 picnic..

Ques:- Where was the first Municipal Corporation in India set up? (a) Bombay (b) Calcutta (c) Delhi (d) Madras
Asked In :- DigiCert, protonmail,
Right Answer:
(a) Bombay
Comments
Deekshitha R Nov 9, 2021

madras

Ques:- 15 people entered a theater before Sujit. 7 people entered the theater between Sujit and Suraj and 20 people entered the theater after Suraj.How many people are there in the theater?
Asked In :- cargills bank limited,
Right Answer:
42 people are there in the theater.
Ques:- In a country where everyone wants a boy, each family continues having babies till they have a boy. After some time, what is the proportion of boys to girls in the country? (Assuming probability of having a boy or a girl is the same)
Asked In :-
Right Answer:
The proportion of boys to girls in the country will be 1:1.
Comments
Swadesh Choudhary Oct 7, 2022

The probability that a child will be born male on any given day is always 1/2.

Suppose:
In any time period, the family making out babies and half boys and another half girls then, In the next time period: half the families turn themselves off and again the half remaining families making out the babies which repeat the first period.

Ques:- A batsman average was 15.at last innings he took 23 runs then his average became 16.how much run he should take to make his average 18?
Asked In :-
Comments
Admin May 17, 2020

((15 X m) + 23)/(m+1)= 16
solving , we get number of matches (m) as 7 (excluding last
match)
so he shud hit 39 runs in last innings to ake average to 18

Admin May 17, 2020

ave per match 15 the last match he get 23 runs 15-23=8
if he get ave 16 runs add every 1 runs his ave 16
now there have 8runs then the number of matchs will be 8
including last match now calculate 16*8=128 18*8=144
144-128=16 now the answer :23+16=39

Ques:- 1. Last exp. 2. Part time or full time 3. Typing speed 4. Why you wish to join?
Asked In :-
Right Answer:
1. My last experience was as a [Your Last Job Title] at [Your Last Company].
2. I am looking for a [part-time/full-time] position.
3. My typing speed is [Your Typing Speed] words per minute.
4. I wish to join because [Your Reason for Joining].
Ques:- Two pipes A and B can separately fill a cistern in 10 and 15 minutes respectively. A person opens both the pipes together when the cistern should have been was full he finds the waste pipe open. He then closes the waste pipe and in another 4 minutes the cistern was full. In what time can the waste pipe empty the cistern when fill?
Asked In :-
Right Answer:
The waste pipe can empty the cistern in 30 minutes.
Ques:- There is a pyramid with 1 cup at level , 2 at level 2 , 3 at level 3 and so on.. It looks something like this 1 2 3 …
Asked In :-
Right Answer:
The total number of cups in a pyramid with n levels is given by the formula: ( frac{n(n + 1)}{2} ).
Ques:- Pairs of primes separated by a single number are called prime pairs. Examples are 17 and 19. Prove that the number between a prime pair is always divisible by 6.
Asked In :-
Right Answer:
The number between a prime pair ( p ) and ( p + 2 ) is ( p + 1 ). Since one of the two consecutive odd numbers ( p ) or ( p + 2 ) is divisible by 3, and both are odd, ( p + 1 ) must be even. Therefore, ( p + 1 ) is divisible by 2. Since one of the two odd primes is divisible by 3, ( p + 1 ) is also divisible by 3. Thus, ( p + 1 ) is divisible by both 2 and 3, making it divisible by 6.
Ques:- What are your Potential Reviews?
Asked In :-
Right Answer:
My potential reviews highlight my strong problem-solving skills, ability to work under pressure, effective communication, and a proactive approach to system management and troubleshooting.
Ques:- Can you describe a work or school instance in which you messed up?
Asked In :-
Right Answer:
In a group project at school, I misunderstood the assignment requirements and completed the wrong section. I realized my mistake when we presented our work, and I took responsibility by discussing it with my team and working late to correct it before the final submission.
Ques:- What things give you the greatest satisfaction at work?
Asked In :-
Right Answer:
The greatest satisfaction at work comes from successfully leading my team to achieve our goals, seeing team members grow and develop their skills, and delivering high-quality results that positively impact the organization.
Ques:- Company A taken a truck on rent of $1280 per month. Another company B bought the truck in $40000 and sends $120 per month. After 4 years what will be the difference in the amount spent by the both companies on the TRUCK.
Asked In :-
Right Answer:
Company A will spend $61,440, and Company B will spend $44,640. The difference is $16,800.
Ques:- The length and breadth of of a rectangle is in the ratio 7:5. If the length decreases by 5 and the breadth increases by 2, then the area of it was 65 sq-km. Find the actual length and breath of the rectangle.
Right Answer:
The actual length of the rectangle is 21 km and the breadth is 15 km.
Ques:- Document validation
Asked In :-
Right Answer:
Document validation is the process of checking a document to ensure it meets specific criteria or standards, such as format, completeness, accuracy, and compliance with regulations or requirements.
Ques:- In a certain code, MONKEY is written as XDJMNL. How is TIGER written in that code?
Asked In :-
Right Answer:
GIVET
Comments
Chuks Sep 2, 2021

MONKEY=YEKNOM then each letter is moved backward =XDJMNL so for TIGER=REGIT the each of the reversed letters are moved backward=QDFHS

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