1 Marks Question

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2 questions · timed · auto-graded

Question 11 Mark

Find the HCF and LCM of the following (state your answers in the form of prime factorisations):
45 and 36

Answer

Here 45 = 3 × 3 × 5
36 = 2 × 2 × 3 × 3
HCF (45, 36) = 3 × 3
LCM (45, 36) = 2 × 2 × 3 × 3 × 5

Question 21 Mark

Find the HCF and LCM of the following (state your answers in the form of prime factorisations):
3 × 3 × 5 × 7 × 7 and 12 × 7 × 11

Answer

Here 3 × 3 × 5 × 7 × 7 and 12 × 7 × 11 = 2 × 2 × 3 × 7 × 11
∴ HCF = 3 × 7 = 21
∴ LCM = 2 × 2 × 3 × 3 × 5 × 7 × 7 × 11.

1 Marks Question - MATHS STD 7 Questions - Vidyadip

MATHS 1 Marks Question