In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces.
1, 1, 3, 9, 6, 36, 10, 100, , 225
A
15
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
16
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
20
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
22
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is A 15 The given sequence is a combination of two series : I. 1, 3, 6, 10, (....) II. 1, 9, 36, 100, 225 The patternin I is + 2, + 3, + 4,... The numbers in II are squares of the corresponding numbers of I. ∴ Missing number = 10 + 5 = 15.