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Sum-of-all-2-digit-numbers-which-when-divided-by-4-yield-unity-as-remainder-is-




Question Number 11267 by 786786AM last updated on 18/Mar/17
Sum of all 2 digit numbers which when  divided by 4 yield unity as remainder is
Sumofall2digitnumberswhichwhendividedby4yieldunityasremainderis
Answered by mrW1 last updated on 19/Mar/17
13+17+21+∙∙∙+97  =((13+97)/2)×22  =1210
13+17+21++97=13+972×22=1210

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