Question

how to solve 1.(A) 1;2;3.
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Answer 1

Q. 1)

Ascending order: 54, 63, 66, 72, 87, 92, 98

n=7

Median =(n/2)th term = (7/2)th term =3.5th term = 4th term =72

Median = 72

Q.2)

$5 \sqrt{7 } \times 2 \sqrt{7} = 5 \times 2 \times 7 = 70$

Q. 3)

Add both the linear equations and then divide by 8

Answer will be

x+y=2