The sum of the series 1, 5, 9, 13 _______ to 40th series is:
- 154
- 314
- 3160
- 158
- None of these
Explanation
1,5,9,13, ---- 40th
d=5-1=4 d=9-5=4 =1+(40-1)*4 =1+156 =157
U have to use the formula S=n/2 [2a+(n-1)d]
S=40/2[2(1)+(40-1)4]
S=20[2+(39)4]
S=20[156]
S=3160
ND-8-08-2023
Related MCQs
- 16
- 18
- 20
- 22
اس سوال کو وضاحت کے ساتھ پڑھیں
- 80
- 70
- 76
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Not equal
- Opposite
- Scalene
- Equal
اس سوال کو وضاحت کے ساتھ پڑھیں
Leave a Reply
Your email address will not be published. Required fields are marked *
