Question

Complete the factor tree.

• A. a = 2,
  b = 5,
  c = 5,
  d = 3 or 2,
  e = 2 or 3
• B. a = 3,
  b = 2,
  c = 2,
  d = 5 or 2,
  e = 2 or 5
• C. a = 2,
  b = 3,
  c = 3,
  d = 1or 10,
  e = 10 or 1
• D. a = 3,
  b = 2,
  c = 3,
  d = 2 or 5,
  e = 5 or 2

Answer 1

The correct option is D

a = 3,
b = 2,
c = 3,
d = 2 or 5,
e = 5 or 2

We have, 6 = 2 × 3
So, $a=3$ .

We have, 10 = 5 × 2
So, $b=2$ .

We have, 30 = 10 × 3
So, $c=3$ .

We have, 30 = 2 × 5
So, $d=2or5ande=5or2$

$\Rightarrow$ a = 3,
b = 2,
c = 3,
d = 2 or 5,
e = 5 or 2