Q.1.
Subtract the first figure from the quotient of the last two (the last figure is the dividend and the middle one is the divisor): 7, 4, 64
Q.2.
Add the first figure to the quotient of the last two (the middle figure is the dividend and the last is the divisor): 23, 49, 7
Q.3.
Multiply the second figure by the sum of the first and last: 22, 4, 3
Q.4.
Multiply the first figure by the sum of the last two: 9, 13, 2
Q.5.
Multiply the last figure by the sum of the first two: 7, 5, 8
Q.6.
Subtract the third figure from the quotient of the first two (the first figure is the dividend and the second is the divisor): 39, 3, 4
Q.7.
Subtract the first figure from the product of the last two: 32, 10, 5
Q.8.
Subtract the first figure from the second, then multiply your answer by the third: 6, 4, 8
Q.9.
Add the first figure to the product of the last two: 16, 7, 4
Q.10.
Add the last figure to the product of the first two: 4, 5, 17