Which of the following numbers has the least number of factors?
The answer is A because 17 is a Prime number and has only 2 factors that are 1 and 17 .
State 'T' for true and 'F' for false and select the correct option. (i) A prime number cannot have 0, 2, 4, 5, 6 and 8 at its ones place except 2. (ii) Two numbers are called co-primes, if their L.C.M. is 1. (iii) If X is a factor of Y and Y is a factor of Z, then X is also a factor of Z. (iv) 4 is the smallest composite number. (i) (ii) (iii) (iv) A T T F T B F F T T C T F T T D T F T F In this question, the answer is supposed to be B as (i) is false but the answer given is C and 5 is a prime number. Then how come that B is the answer?