Question

In eleventh standard out of 150students45opt for science,65opt for maths,10opt for both.how many opt for only maths?

Answer 1

Answer:

it should be 75.

Step-by-step explanation:

According to me, as 65 students opt for maths and 10 students opt for science and maths both, we should not only include 65 students but also the 10 students who opt for maths and science, both.

so, 65 + 10 = 75.

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Answer 2

Answer:

55

Step-by-step explanation:

65 students opt maths and 10 students opt both

therefore,

the only only maths opting students are

65-10=55.