21. A, B, C, Invested 20 lac rupees in a business in the ratio 7 : 2 : 1. The total profit is 18%. A has to pay 30% tax and B hast to pay 20% tax. What percent of net profit of A is more than the net profit of B?
(a) 118.8%
(b) 180.0%
(c) 206.25%
(d) 304.5%
(e) None of the above/More than one of the above
Correct Answer:
(c) 306.25%
Explanation:
A’s net profit is ₹1.764 lac; B’s is ₹0.576 lac. The official answer is derived from (A/B) * 100, which is 206.25%.
22. If SURGICAL-STRIKE is coded as 13979313-129925, then METRO-TRAIN is coded as
(a) 15295-29195
(b) 45296-29195
(c) 45295-29194
(d) 15296-29195
(e) None of the above/More than one of the above
Correct Answer:
(b) 45296-29195
Explanation:
The code for each letter is the sum of the digits of its alphabetical position until a single digit is reached (e.g., S=19 → 1+9=10 → 1+0=1; M=13 → 1+3=4). Applying this rule gives METRO (45296) and TRAIN (29195).
23. x is a consecutive whole number and the first four values of expression x3+3y-3 are 7, 20, 45, 88, then the fifth value is
(a) 137
(b) 155
(c) 158
(d) 143
(e) None of the above/More than one of the above
Correct Answer:
(b) 155
Explanation:
Analyzing the number sequence 7, 20, 45, 88 , the third difference is constant (6). X = 5 and y = 11 , Extending the pattern gives the next term as 155.
24. In the series of numbers and alphabets A26H, C24F, G20B, the next term is
(a) M13D
(b) O11C
(c) M12B
(d) M14E
(e) None of the above/More than one of the above
Correct Answer:
(e) None of the above/More than one of the above
Explanation:
There are multiple logical patterns in the series, but none of them consistently lead to any of the given options. For example, one pattern (First letter: +2, +4, +6; Number: -2, -4, -6, Third letter: -2, -4, -6) gives M14V…, which isn’t fully matched.
25. The dearness-allowance of a person with basic salary Rs.7700 is increased to 132% from 125% and the tax deduction on both is increased to 22% from 20%. He got salary increased by
(a) Rs.74.00
(b) Rs.77.00
(c) Rs.385.00
(d) Rs.369.00
(e) None of the above/More than one of the above
Correct Answer:
(a) Rs.74.00
Explanation:
The old net salary was ₹13,860. The new net salary is ₹13,933.92. The increase is ₹73.92, which is approximately ₹74.00.
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29. How many times the digit 9 occurs in the numbers from 100 to 999.
(a) 280
(b) 218
(c) 229
(d) 228
(e) None of the above/More than one of the above
Correct Answer:
(a) 280
Explanation:
Total occurrences of ‘9’ from 1 to 999 is 300. Total occurrences from 1 to 99 is 20. Therefore, the occurrences from 100 to 999 is 300 – 20 = 280.
30. In the bottom of a water tank, there are two drains A and B. If only A is open, it takes 30 minutes to empty a full tank and if only B is open, it takes only 20 minutes. If for 10 minutes both drains are open, then B is closed. how much time it takes to empty a full tank?
(a) 18 minutes
(b) 15 minutes
(c) 17 minutes
(d) 20 minutes
(e) None of the above/More than one of the above
Correct Answer:
(b) 15 minutes
Explanation:
In 10 minutes, both drains empty 5/6 of the tank. The remaining 1/6 is emptied by drain A alone in (1/6) / (1/30) = 5 minutes. The total time taken is 10 + 5 = 15 minutes.
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