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1. a:b=4:5 এবং b:c=6:7 হলে, a:b:c=
- A. 20:35:42
- B. 20:35:42
- C. 20:35:42
- D. 20:35:42
Answer: Option B
Explanation:
a:b=4:5
=(4×6):(5×6)
=24 :30
b:C =6:7
=(6×5): (7×5)
=30:35
..a:b:c
= 24:30:35
=(4×6):(5×6)
=24 :30
b:C =6:7
=(6×5): (7×5)
=30:35
..a:b:c
= 24:30:35
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