Practicing Success
Practicing Success
CUET Preparation Today
Which term of the A.P. 3, 7, 11. ...... 147 is its middle term? |
18th 19th 20th 21st |
19th |
Given AP 3, 7, 11. ...... 147 a= 3 d= 4 an = 147 an = a+(n-1)d 147 = 3 + (n-1)*4 144/4 = 36 = n-1 n = 37 middle term (in case of odd terms) = (n+1)/2 = 19th term The correct answer is Option (2) → 19th |
