Question

If HCF (10,15)=2a+1 then a=

Answer 1

Answer:

Using prime factorisation method:

(i) 12, 15 and 21

Factor of 12=2×2×3

Factor of 15=3×5

Factor of 21=3×7

HCF (12,15,21)=3

LCM (12,15,21)=2×2×3×5×7=420

Answer 2

Answer:

hi your answer is

Step-by-step explanation:

a=½

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