If log | a | + | log | b | = log (a + b), then: |
b | a |
log | a | + log | b | = log (a + b) |
b | a |
⟹ log (a + b) = log | ❨ | a | x | b | ❩ | = log 1. |
b | a |
So, a + b = 1.
U ? A = {a, b, c, d, e, f} ? {a, b, c} = {a, b, c, d, e, f} = U
(U ? A)? = ?.
Sunil's income is less than Mukul's = [(10 / (100 + 10)] × 100 %
= ( 1000 / 110 )%
= 9.09 %
So, 39 is wrong.
So, 33 is wrong. It must be 35
∴ x = 7.
So, 40 is wrong.
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