Zero. Zero times anything equals zero.
28 x 28 = 784
7 and 13. Solution : Let the two numbers be a and b. Then ab = 91 , so b = 91/a. a + b = 20 .......substituting for b, this becomes : a + (91/a) =20 Multiplying both sides by a gives : a2 + 91 = 20a Rearranging : a2 - 20a + 91 = 0 Factoring gives : (a - 7)(a - 13) = 0 Then the numbers occur when x - 7 = 0. → x = 7, and when x - 13 = 0. → x = 13.
The numbers that multiply to 784 are called factors of 784. To find these factors, you can start by dividing 784 by the smallest prime number, which is 2. Continuing this process, you will eventually find that the factors of 784 are 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, and 784.
The factors of 784 are 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, and 784. The prime factors of 784 are 2 x 2 x 2 x 2 x 7 x 7.
784
98 x 8 = 784
91 x 91 = 8281
90,784,020,005 =(9 x 10000000000) + (0 x 1000000000) + (7 x 100000000) + (8 x 10000000) + (4 x 1000000) + (0 x 100000) + (2 x 10000) + (0 x 1000) + (0 x 100) + (0 x 10) + (5 x 1) or(9 x 1010) + (0 x 109) + (7 x 108) + (8 x 107) + (4 x 106) + (0 x 105) + (2 x 104) + (0 x 103) + (0 x 102) + (0 x 101) + (5 x 100)
849
200 x 4 = 800 200 - 196 = 4 4 x 4 = 16 800 - 16 = 784
1 x 91, 7 x 13, 13 x 7, 91 x 1 = 91
(1, 784); (2, 392); (4, 196); (7, 112); (8, 98); (14, 56); (16, 49); (28, 28)