The answer is 7/8. when converted into decimal , it becomes 0.8 something which is greater than all and so farthest from 0
First, you multiply 2.1 by 3.2, which gives you the answer of 6.72. Then, you multiply 10-2 by 10-4. One rule about multiplying exponents, you just add the exponents. So 10-2 x 10-4 = 10-6. Finally you get the answer of C. 6.72 x 10-6.
Since 30 is not a square root you would use the closest square roots √25 and √36 which makes your answer 5 and 6
Sum of n terms in a geometric progression is given by Sn = a1 (1 - r^n) / (1 -r)
3( 1 - 4^6) / (1-4)
= 4,095
