1.1!+2.2!+3.3!+…+n.n!=

1.  (n+1)!

2.  (n+1)!-1

3.  (n!)2-1

4.  (n+1)!-n

5.  (n+1)!+1

View Answer  
5
Correct Answer :

(n+1)!-1


Explanation :
No Explanation available for this question

A man is going to a car auction. All purchases must be paid for in cash. He goes to the bank anddraws out Rs. 25,000. Since the man does not want to be seen carrying that much money, he places it in 15 envelopesnumbered 1 through 15 such that he could count any amount from 1 to 25000 using combinations ofsome envelopes. Each envelope contains the least number of bills possible of any availablecurrency. (for example, no two tens instead of a twenty). The possible currency denominations are1,2,5,10, 20, 50 and 100. At the auction he makes a successful bid of Rs. 8322 for a car. He hands the auctioneer envelopes 2,8, and 14. After opening the envelopes the auctioneer finds exactly the right amount. How manyones (one rupee notes) did the auctioneer find in the envelopes.

1.  1

2.  2

3.  3

4.  Indeterminate

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

A traveler, on his way to a certain village A, reaches a road junction, where he can turn left or right.He knows that only one of the two roads leads to village A, but unfortunately, he does not knowwhich one. Fortunately, he sees two twin-brothers standing at the road junction, and he decides toask them for directions. The traveler knows that one of the two brothers always tells the truth and the other one always lies.Unfortunately, he does not know which one always tells the truth and which one always lies.With which of the following questions can the traveler find out the way to village A by asking justthis one question to one of the two brothers

1.  "Does the left road lead to village A according to your brother"

2.  "Which road leads to village A according to your brother?"

3.  "If I were to take the left road then what according to your brother will be the answer to thequestion “Am I on the right road ?”

4.  None of the above

View Answer  
4
Correct Answer :

"Does the left road lead to village A according to your brother"


Explanation :
No Explanation available for this question

There are 4 quarts in a gallon. A gallon of petrol sells for Rs.12 and a quart of the same petrol sellsfor Rs.5. The owner of a rental agency has 6 machines and each machine needs 5 quarts of petrol.What is the minimum amount of money he must spend to purchase enough petrol

1.  Rs.84

2.  Rs.94

3.  Rs.96

4.  Rs.102

View Answer  
4
Correct Answer :

Rs.94


Explanation :
No Explanation available for this question

If A1, A2 are two arithmetic means between two numbers a and b and G1 G2 be two geometric meansbetween the same two numbers, then          is equal to

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

The value of 2117 ×´1883 – 1113 × 887 is

1.  2999080

2.  3009080

3.  2889080

4.  2898080

View Answer  
4
Correct Answer :

3009080


Explanation :
No Explanation available for this question

The operation * applied to a number gives as its result 10 subtracted from twice the number. What is* (*(*9)

1.  –11

2.  2

3.  0

4.  -2

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

Excluding the top book in each pile, which two piles are of the same height above the ground

1.  C, A

2.  A, B

3.  B, C

4.  None of these

View Answer  
4
Correct Answer :

None of these


Explanation :
No Explanation available for this question

The cost of production in a factory has a fixed component and an amount that varies directly withthe number of units produced. The units are sold at 20% profit. When 250 units are produced, theprice is Rs.120, and the price drops to Rs.96 when the production is doubled. What will the price bewhen 1000 units are produced

1.  Rs.70

2.  Rs.80

3.  Rs.86.8

4.  Rs.84

View Answer  
4
Correct Answer :

Rs.84


Explanation :
No Explanation available for this question

The answer-sheet for an objective type test with 25 questions is in the form of a 5 × 5 matrix asshown below. The respondent answered the questions such that exactly one question in each rowand each column is left blank and exactly one answer in each row and each column is wrong. Ifeach correct answer carries 1 mark and no negative marks are awarded for a wrong answer, thenwhat is the score of the respondent

1.  5

2.  15

3.  10

4.  20

View Answer  
4
Correct Answer :

15


Explanation :
No Explanation available for this question
Previous Next

Interview Questions

MongoDB
Java Script
Node JS
PHP
JQuery
Python