Mr. Karim purchased TK. 600 worth of traveler's cheques. If each cheque was worth either TK. 20 or TK. 50, which of the following cannot be the number of TK. 20 cheques purchased ?
Created: 6 years ago |
Updated: 2 years ago
best des
10*20 = 200...rest 400 is divisible by 50
15*20 = 300...rest 300 is divisible by 50
20*20 = 400...rest 200 is divisible by 50
but 18*20 = 360...rest 240 is not divisible by 50
ans 18
Md Azizur Rahman
Founder of Satt
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