1. If three natural numbers are grouped together to form a triplet such that they are pair wise coprime, then which of the following set of numbers does not form a triplet?
a. (2, 3, 7)
b. (2,9, 11)
c. (3, 5, 7)
d. (3,4,9)
2. The greatest number of four digits, which is exactly divisible by each of 16, 24, 35 and 42 is
a. 8462
b. 8400
c. 8692
d. None of these
3. Three sets of English, Mathematics and Science books containing 336, 240 and 96 books, respectively have to be stacked in such a way that all the books are stored subject wise and the height
of each stack is the same. So, the total number of stacks will be
a. 14
b. 21
c. 22
d. 48
4. A school bus can either accommodate 40 children or 30 adults. Given that there
are already 24 children and 8 adults seated in the bus, how many more adults can be seated in the bus?
a. 5
b. 4
c. 3
d. 2
5. The LCM of two numbers is 24 times their HCF. The sum of their HCF and LCM is 375. If one of the numbers is 45, then what is the other number?
a. 124
b. 120
b. 118
d. 121
6. The HCF of 6/7 , 24/35 and 42/49 is
a. 6/254
b. 9/365
c. 3/254
d. 6/245
Please answer all the questions.
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