Quiz 1

Here, there are two alternating patterns, one addition and one subtraction. The first starts with 2 and increases by 2; the second starts with 44 and decreases by 3.

The Pattern is 5³ - 3, 6³ - 3, 7³-3, 8³ - 3, 9³ - 3, 10³ - 3

i.e 5³ - 3 = 125 - 3 = 122

6³ - 3 = 216 - 3 = 213

7³ - 3 = 343 - 3 = 340

8³ - 3 = 512 - 3 = 509

9³ - 3 = 729 - 3 = 726

10³ - 3 = 1000 - 3 = 997

Therefore 997 is the correct answer.

77, 28, 64 , 39 , 55 , x
77- (72) = 28 ,
28+(62) =64 ,
64- (52) = 39 ,
39+ (42) = 55,
Answer : 55- (32)=46

15
First number is 31
2nd number is 29 (31 -2)
3rd number is 24 (29 -5)
4th number is 22 (24 -2)
5th number is 17 (22 -5)
6th number is 15 (17 -2)

This is an alternating subtraction series, which subtracts 5, then 2, then 5, and so on.

1448/1 – 2=1446,
1446/2 – 3=720,
720/3 – 4=236,
236/4 – 5=55,
55/5 – 6=5.

In this addition series, 1 is added to the first number; 2 is added to the second number; 3 is added to the third number; 4 is added to the fourth number; and go on.

This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.