CBSE Class 10 Maths (Basic) 2025 · Paper 430/1/1 · Question 26(b)

Real Numbers 3 marks Easy

The factor tree of a number

x

is shown below. Find the values of

x

y

a

and

b

. Hence, write the product of the prime factors of the number

x

so obtained.

Answer

x = 840

y = 420

a = 3

and

b = 7

. The product of the prime factors of

x

840 = 2 \times 2 \times 2 \times 3 \times 5 \times 7 = 2^{3} \times 3 \times 5 \times 7

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