If  a  and  b  are positive integers, and  x=2×3×7×a , and  y=2×2×8×b , and the values of both x and y lie between 120 and 130 (not including the two), then  a–b=

1.  -2

2.  -1

3.  1

4.  2

View Answer  
4
Correct Answer :

-1


Explanation :
No Explanation available for this question

A number when divided by 342 gives a remainder 47. When the same number is divided by 19, what would be the remainder

1.  5

2.  9

3.  4

4.  0

View Answer  
4
Correct Answer :

9


Explanation :
No Explanation available for this question

A bank issued credit card numbers and the corresponding PIN (Personal Identification Number). Both are 3-digit numbers up to 996. Pinaki was the last to get the credit card and so he had the last possible credit card number. He was afraid of forgetting his PIN. He wrote down the number 123 in his diary to remember his PIN. He also wrote out the way to calculate 123 : "Multiply the card number by PIN. Divide the product by 997. The remainder is 123". Once, Prafull saw his diary in which Pinaki wrote this number 123. Prafull did a lot of purchasing, as he now knows Pinaki's PIN. What is Pinaki's PIN

1.  874

2.  875

3.  876

4.  877

View Answer  
4
Correct Answer :

874


Explanation :
No Explanation available for this question

The least common multiple of two natural numbers a and b, is 399. What is the minimum possible sum of the digits of the number a(given a > b)

1.  1

2.  3

3.  5

4.  7

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

When 242 is divided by a certain divisor the remainder obtained is 8. When 698 is divided by the same divisor the remainder obtained is 9. However, when the sum of the two numbers 242 and 698 is divided by the divisor, the remainder obtained is 4. What is the value of the divisor

1.  11

2.  17

3.  13

4.  23

View Answer  
4
Correct Answer :

13


Explanation :
No Explanation available for this question

Suppose n is an integer such that the sum of digits on n is 2, and 1010 < n ×10n. The number of different values of n is:

1.  8

2.  9

3.  10

4.  11

View Answer  
4
Correct Answer :

11


Explanation :
No Explanation available for this question

What is the remainder when 72×82 is divided by 6

1.  2

2.  4

3.  6

4.  8

View Answer  
4
Correct Answer :

4


Explanation :
No Explanation available for this question

Four digits of the number 29138576 are omitted so that the result is as large as possible. The largest omitted digit is

1.  5

2.  6

3.  7

4.  8

View Answer  
4
Correct Answer :

5


Explanation :
No Explanation available for this question

If a person makes a row of toys of 20 each, there would be 15 toys left. If they made to stand in rows of 25 each, there would be 20 toys left, if they made to stand in rows of 38 each, there would be 33 toys left and if they are made to stand in rows of 40 each, there would be 35 toys left. What is the minimum number of toys the person have

1.  12,55

2.  3,805

3.  7,595

4.  3,795

View Answer  
4
Correct Answer :

3,795


Explanation :
No Explanation available for this question

For what value of 'n' will the remainder of 351n and 352n be the same when divided by 7

1.  2

2.  3

3.  6

4.  4

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question
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