the answer is B) 19 × 11 = 209
coz A prime number is a whole number greater than 1 whose only factors are 1 and itself.
but here it is a multiple of 11 and 19 ....
so its proved
D because it is the only one that is unpredictable
This will be -7 because this would make the denominator b + 7 = 0.
The top number is 4 and t =1, so you need to replace t with 1, find the answer, then replace t with 2 through 4, then find the sum of all of them:
6^1-1 = 6^0 = 1
6^2-1 = 6^1 = 6
6^3-1 - 6^2 = 36
6^4-1 = 6^3 = 216
Sum = 1 + 6 + 36 + 216 = 259
The answer is B.
