Question

Is 7×5×3×2+3 a composite number? Justify your answer

Answer 1

7×5×3×2+3 = 3 (70+1) = 3 x 71.

It has two factors 7 & 31 so it can't be prime number.

All factors- 1 , 213 , 3 & 71.

Therefore it is a composite number.

Answer 2

Given,

7×5×3×2+3

To find,

Is the value after solving the given question composite?

Solution,

Yes, the value after solving 7×5×3×2+3 is a composite number.

We can easily solve this problem by following the given steps.

Now, first, let's solve 7×5×3×2+3.

Using the BODMAS ( Brackets, Of, Division, Multiplication, Addition and Subtraction) rule, we will first solve the multiplication and then addition.

7×5×3×2+3 = 35 × 3 × 2 + 3

7×5×3×2+3 = 105 × 2 + 3

7×5×3×2+3 = 210 + 3

7×5×3×2+3 = 213

We know that composite numbers are numbers that have a minimum of one factor apart from 1 and itself. For example, 4 is a composite number because its factors are 1, 2, and 4.

Now, the factors of 213 are 1, 3, 71, and 213.

So, 213 is a composite number.

Hence, 7×5×3×2+3 is a composite number.