54
10, 36 and 900
10.
It is: 9*8 = 72
The sixth multiple of 7 is 7 times 6 which equal to 42. And the ninth multiple of 8 is 9 times 8 which equal 72. so 72-42 equals 30. The answer is 30.
It is: 9 times 13 = 117
1
Three fourths divided by one ninth = 27/4 or 63/4
4 1/9 - 2 1/9 = 2
.44444...
4 to the fourth power times 8 to the ninth power = 34,359,738,368
1/9 of 36 is 4.