Question

if the least prime factor of a is 3 and the least prime factor of B is 7 then find least prime factor of(a+b)

(CH 1 grade 10th)

Answer 1

Here by looking at the question it can be estimated that the a and b are odd numbers or else it would have 2 as their least prime factor (if even )

When we add two odd numbers we get an even number that implies that it’s least prime factor is 2 ....


Hope you found me of service...

Answer 2

here you have to assume the values of a and b

first a=9 ,3 is the least prime factor.

now b=7, 7 is the least prime factor

so (a+b)= 7+3=10

least prime factor of 10
is 2


ans will be 2.... i hope u got it