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21.
In the following sum, "?" stands for which digit?
? + 1? + 2? + ?3 +?1 = 21?
? + 1? + 2? + ?3 +?1 = 21?
- A.4
- C.8
- B.6
- D.9
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Let x + (10 + x) + (20 + x) + (10x + 3) + (10x + 1) = 200 + 10 + x. | ||||||
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22.
In a division sum, the divisor is 10 times the quotient and 5 times the remainder. If the remainder is 46, the dividend is:
- A.4236
- C.4336
- B.4306
- D.5336
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
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23.
A number when divided by 119 leaves 19 as remainder. If the same number is divided by 17, the remainder obtained is :
- A.2
- C.7
- B.3
- D.10
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| Number = (119 x Q) + 19 = 17 x (7Q) + (17 + 2) = 17 x (7Q + 1) + 2 | |||
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24.
There are four prime numbers written in ascending order. The Product of the first three is 385 and that of the last three is 1001. The last number is:
- A.11
- C.17
- B.13
- D.19
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Let the given prime numbers be a, b, c, d. Then, abc = 385 and bcd = 1001. | |||||||||||||||||||||
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25.
The smallest number that must be added to 803642 in order to obtain a multiple of 11 is:
- A.1
- C.7
- B.4
- D.9
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| On dividing 803642 by 11, we get remainder = 4. | ||||
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