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प्रश्न
The average of two numbers are 20. One number is 24, another number is ____________
विकल्प
16
26
20
40
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उत्तर
16
Explanation;
Hint:
`(x + y)/2` = 20
x + y = 40
24 + y = 40
y = 40 – 24
= 16
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