GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 2

Answer 1

Since given : all row sums are same as each other and all diagonal sums and all column sums

mid row = 3.6 + 3 + 2.4 = 9
$\therefore$ a$_{11}$ + a$_{22}$ + a$_{33}$ = 9

9 – 2.3 – 3 = a$_{33}$ = 3.7

also, a$_{11}$ + a$_{21}$ = 5.9

$\therefore$ a$_{31}$ = 3.1

x = a$_{32}$ = 9 – 3.1 – 3.7 = 2.2

d)