Question

How many integers greater than 30 and less than 40 are each the product of two distinct prime factors?

A. 1
B. 2
C. 3
D. 4
E. 5

Answer 1

Answer:

How many integers greater than 30 and less than 40 are each the product of two distinct prime factors. The Answer is D

Answer 2

The answer is option E 5

What are prime numbers?

The numbers which are only divisible by 1 and the number itself.

What is prime factorisation?

Splitting the numbers into prime numbers, such that their product result the number itself.

First eliminate the prime numbers, 31,37

Remaining: 32,33,34,35,36,38,39

32=2x2x2x2x2

33=3x11

34=17x2

35=3x7

36=2x2x3x3

38=19x2

39=13x3

so, 33,34, 35,38,39

Therefore, 5 nnumbers between 30 and 40 are the product of two prime no.s

Learn more about Prime factorisation,

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