Find the missing number 15,16,20,29,45,?
Answers
Answered by
7
Answer:
Find out the incorrect number 15, 16, 22, 29, 45, 70
Option:
A. 16
B. 22
C. 45
D. 70
Answer: B . 22
Justification:
The pettern is + 1, + 4, + 9, + 16, + 25,.... i.e. + 12, + 22, + 32, + 42, + 52,...
So, 22 is wrong and must be replaced by (16 + 4) i.e. 20.
Answered by
0
Answer:
The missing number is 70.
Step-by-step explanation:
15,16,20,29,45
15 + 1² =15 + 1= 16
16 + 2²= 16 + 4 =20
20 + 3² =20 + 9 = 29
29 + 4² =29 + 16 = 45
45 + 5² = 45 + 25 = 70
+ 1, + 4, + 9, + 16, are added to each number of the given series respectively,
we can observe that the numbers are squares of 1,2,3,4 then the next number will be 5 that is 5²=25 is added to the before number 45. the result will be 45+25=70. Therefore the next number in the series is 70.
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