Find the mean of the squared numbers: (25,81,100,9,121,49,25,169,121,16) / 10 = 71.6.

Ya ce daga cikin wadannan kudade makarantar za ta yi amfani da Naira biliyan wajen yin manyan aiyyuka, Naira biliyan 1.7 wajen aiyukkan yau da kullum.
