Question

99+95+91+,,,,,,,,+20 के पदों का योग ज्ञात करें​

Answer 1

Answer:

kya kya kua kya kya samath ni aya xd

Answer 2

Answer:

305

Step-by-step explanation:

(1+2+3+....+99)-(1+2+3+...+19)

Putting formula for adding the numbers when they are in serials i.e. {n×(n+1)}/2 where n represents no. of terms.

= {99×(99+1)}/2 - { 19×(19+1)}/2

= (99 × 100)/2 - (19×20)/2

= 4950-190

= 4760