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1. The probability that a student passes Subject A, B or C is 98%. The probability that he or she passes A is 41%, B is 59%. The probability that he or she passes A and C is 25% and B and C is 20%. The probability that he or she passes all the 3 subjects is 14%. What is the probability that he or she passes subject C?
A. 48
B. 42
C. 25
D. 29
Ans. D
2. The cost price of 10 articles is equal to the selling price of 9 articles. find the profit percent.
A. 101/9 %
B. 100/9 %
C. 102/9 %
D. 103/9 %
Ans. B
3. 8 4.5 5.5 13 56 ?
A. 456
B. 436
C. 526
D. 556
Ans. A
4. Ritu has 3 shirts in shades of red, 4 in yellow shades and 5 in green shades . Three shirts are picked at random. The probability that all of those are in red shades is :
A. 2c3/13c3
B. 1c3/13c4
C. 3c3/12c3
D. 5c3/10c3
Ans. C
5. The ratio of radii of two right circular cylinders is 6:7 and their heights are in the ratio 5:9. The ratio of their respective curved surface areas is
A. 14:15
B. 17:19
C. 23:29
D. 10:21
Ans. D
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