Ques. Ram buys 7 novels from a book fair. Shyam buys 8 novels from the fair, none of which is common with those bought by Ram. They decide to exchange their books one for one. In how many ways can they exchange their books for the first time ?
Op 1: 7!x8!
Op 2: 7x8!
Op 3: 7!x8
Op 4: 56
Op 5:
Correct Op : 4
Ques. In an examination 10 questions are to be answered choosing at least 4 from each of part A and part B. If there are 6 questions in part A and 7 in part B, in how many ways can 10 questions be answered ?
Op 1: 212
Op 2: 266
Op 3: 272
Op 4: 312
Op 5:
Correct Op : 2
Ques. A box contains 20 tickets of identical appearance, the tickets being numbered 1, 2, 3, ….., 20. In how many ways can 3 tickets be chosen such that the numbers on the drawn tickets are in arithmetic progression ?
Op 1: 18
Op 2: 33
Op 3: 56
Op 4: 90
Op 5:
Correct Op : 4
Op 1: 7!x8!
Op 2: 7x8!
Op 3: 7!x8
Op 4: 56
Op 5:
Correct Op : 4
Ques. In an examination 10 questions are to be answered choosing at least 4 from each of part A and part B. If there are 6 questions in part A and 7 in part B, in how many ways can 10 questions be answered ?
Op 1: 212
Op 2: 266
Op 3: 272
Op 4: 312
Op 5:
Correct Op : 2
Ques. A box contains 20 tickets of identical appearance, the tickets being numbered 1, 2, 3, ….., 20. In how many ways can 3 tickets be chosen such that the numbers on the drawn tickets are in arithmetic progression ?
Op 1: 18
Op 2: 33
Op 3: 56
Op 4: 90
Op 5:
Correct Op : 4
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