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26.
9358 – 6014 + 3127 =?
- A.6381
- C.6561
- B.6471
- D.6741
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| 9358 - 6014 + 3127 = (9358 + 3127) - 6014 = (12485 - 6014) = 6471 |
27.
The largest natural number by which the product of three consecutive even natural numbers is always divisible, is:
- A.16
- C.48
- B.24
- D.96
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Required number = (2 x 4 x 6) = 48. |
28.
The least prime number is:
- A.0
- C.2
- B.1
- D.3
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The least prime number is 2 |
29.
A number when divided by 6 leaves a remainder 3. When the square of the same number is divided by 6, the remainder is:
- A.0
- C.2
- B.1
- D.3
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Let x = 6q + 3. Then, x2 = (6q + 3)2 = 36q2 + 36q + 9 = 6(6q2 + 6q + 1) + 3. |
| So, when x2 is divided by 6, remainder = 3. |
30.
12345679 x 72 is equal to :
- A.88888888
- C.898989898
- B.888888888
- D.999999998
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| 12345679 x 72 = 12345679 x (100 - 28) = 1234567900 - (12345679 x 28) | ||||
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