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!)find the value of log 490 if log 7 is=0.8450

2)given that hcf(306,657) =9 find lcm (306,657)

3)if prove that 2 log(x+y)=Log X+log Y+3 log 2

4)simplify log243 to the base 9

2
is 4) solution is correct ? give ur reply?

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