Calculate hcf of 3rays to 3 ×5 and 3 rays to 2 ×5rays to 2
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3 rays to 3 = 3×3×3
= 27
3 rays to 2 = 3×3
= 9
5 rays to 2 = 5×5
= 25
Now,
27 ×5 = 135
= 3×3×3×5
9 × 25 = 225
= 3×3×5×5
Therefore,
HCF = 3×3×5
= 45
or
another method
a=225
b=135
a = bq + r
225 = 135 × 1 + 90
135 = 90 × 1 + 45
90 = 45 × 2 + 0
Therefore, HCF = 45
= 27
3 rays to 2 = 3×3
= 9
5 rays to 2 = 5×5
= 25
Now,
27 ×5 = 135
= 3×3×3×5
9 × 25 = 225
= 3×3×5×5
Therefore,
HCF = 3×3×5
= 45
or
another method
a=225
b=135
a = bq + r
225 = 135 × 1 + 90
135 = 90 × 1 + 45
90 = 45 × 2 + 0
Therefore, HCF = 45
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