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36.
What should be the maximum value of B in the following equation?
5A9 – 7B2 + 9C6 = 823
5A9 – 7B2 + 9C6 = 823
- A.5
- C.7
- B.6
- D.9
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
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37.
The least number which must be subtracted from 6709 to make it exactly divisible by 9 is:
- A.2
- C.4
- B.3
- D.5
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| On dividing 6709 by 9, we get remainder = 4. | |||
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38.
The total number of even prime numbers is:
- A.0
- C.2
- B.1
- D.None of these
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| There is only one even prime number, namely 2. |
39.
How many three-digit numbers are divisible by 6 in all?
- A.149
- C.151
- B.150
- D.166
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Required numbers are 102, 108, 114, ........ , 996. | |||||
| This is an A.P. with a = 102 and d = 6. | |||||
| Let the number if its terms be n. Then, | |||||
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40.
The greatest number by which the product of three consecutive multiples of 3 is always divisible is :
- A.54
- C.162
- B.81
- D.243
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Required number = Product of first three multiples of 3 = (3 x 6 x 9) = 162. |
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