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-5 and -6
13
30.
If they can be same 15*15 =225 if they have to be distinct 13*17 =221
(6 * 30) + (15 * 42) = 180 + 630 = 810.
Take 13 and 17 as an example. Sum is 13 + 17 ie 30, product is 13 x 17 = 221
-5 and -6
17 & 13
10 and 3
The sum of 8 and 5 is 13. There is then no number with which to calculate its product.
product means multiplication sum means adding. 6 * 5 = 30 6 + 5 = 11
The product of a sum and a difference with 31 times 29 is:(30+1) x (30-1)sum to differencemakea product= 30² - 1²= 900 - 1= 899
30.
29.
13
How about: 30 and 30
30.