exam Maths Puzzle Numerical Ability

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?

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exam Other Question
log 10 x + log 10 y..... y = 3 then xy= how do you solve x-8y=37 3x+8y=-17 by using the elimanation method it doesnt really help with the steps can you or anybody show me.