In class there are 50 students. 43 of them are boys and the remaining are girls. How many girls are there in 4 such similar classes?
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let the required number be x.
total no. of students=50
totalno. of boys=43
total no. of students = no. of boys + no. of girls
50=43+x
x=50-43=7
the total no. of girls in such four classes=7^4=28
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