Question
A 2-member commitee is to be constituted out of 4 men
and 2 women. What is the probability that a commitee thus formed will have exactly one woman?Solution
Total member = 4 + 2 = 6 Committee should have exactly 1 woman. So, required probability = (1 Men and 1 women) out of total = 4C1 * 2C1/ 6C2 = 8/15
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The ratio of P’s to Q’s salary is 5 : 7. If Q’s salary is increased by 35%, his total salary becomes Rs. 52,920. What is the salary of P?
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In a class, the ratio of number of boys to number of girls is 5:3. If 2 boys joined the class and 3 girls left the class, then the ratio becomes 7:4. Fi...
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