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Number Objective Questions and answer

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6.) In doing a division of a question with zero remainder, a candidate took 12 as divisor instead of 21. The quotient obtained by him was 35. The correct quotient is?

A. 15                                 B. 13

C. 17                                         D. 20

View Answer

Answer: Option D

Explanation:

Dividend = 12 * 35 =420

Now dividend = 420 and divisor = 21

Therefore correct quotient = 420/21 = 20


7.) Find the sum of all odd number up to 100?

A. 1400                               B. 1970

C. 2500                               D. None of these

View Answer

Answer: Option C

Explanation:

The given number is 1, 3, 5………….99

This is an A.P with a = 1, d = 2

Let it contain n term 1 + (n-1)2 = 99

==> n = 50

Then required sum = n/2 (first term + last term)

==> 50/2(1 + 99) = 2500


8.) In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient?

A. 0                                    B. 12

C. 13                                  D. 20

View Answer

Answer: Option D

Explanation:

Number = (12 x 35)

Correct Quotient = 420 ÷ 21 = 20


9.) The difference between the local value and the face value of 7 in the numeral 32675149 is

A.       16211                        B.       69993

C.       87112                        D.       76190

View Answer

Answer: Option B

Explanation:

(Local value of 7) - (Face value of 7) = (70000 - 7) = 69993


10.) 2056 x 987 =?

A. 1936372                           B. 2029272

C. 1896172                                 D. 1926172

View Answer

Answer: Option B

Explanation:

2056 x 987 = 2056 x (1000 - 13)

= 2056 x 1000 - 2056 x 13

= 2056000 - 26728

= 2029272.

 
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