Q.1.
(21 )(8 )
Q.2.
7 (4 + 3 + 12)
Q.3.
(5 - 2 + 3)
Q.4.
10 (5 - 9 + 22)
Q.5.
3 (17 + 5 + 13)
Q.6.
15 ● 5
Q.7.
(8 )(3 )
Q.8.
(20 + 10 + 100)
Q.9.
12 ● 10
Q.10.
6 ● 3