exam Maths Puzzle Numerical Ability

log 10 x + log 10 y..... y = 3 then xy=

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exam Other Question

Solve by the elimination method
4x-8y=1
4x-8y=2 A postman delivered a total of 23 letters to 11 houses. If each house got atleast one letter, what is the largest number of letters that any one of the houses could have received?