Russia | Math Olympiad Question | Calculator NOT allowed

[@lyricsssulders43]

👏👏👏

[@sourabhsinghal253]

Simple sum of gp series ka formula apply kr dijiye

[@RyanLewis-Johnson-wq6xs]

It’s in my head.

[@crazyindianvines1472]

Great explanation

[@ManojkantSamal]

Here a=8^0
r=8, n=6
Sn={a×(r)^n}-1
={(8^0)×(8^6)}-1
=(1×262144)-1
=262144-1=262143 (may be )

[@prabhushettysangame6601]

37449

[@vijaymaths5483]

Good effort 👌 but final answer is 37449, you may check another one time 👍

[@uttiyamajumdar8928]

This is simple GP series with 6 terms and first term 1 and common ratio 8. Using the formula for summatìon of GP series upto 6 terms, we arrive at the same answer.

[@RealQinnMalloryu4]

120 +{0+0 ➖ }={120+1 }= 121 10^10^3^7 2^5^2^53^1 1^1^2^13^1 23 (x ➖ 3x+2).

[@subbaraob8474]

64×65
=64(64+1)
=64^2+64
=69*60+16+480+64
=3600+16+480+64=4160

[@prabhushettysangame6601]

Final answer is 37449🎉

[@walterwen2975]

Math Olympiad Question, Simplify: 8⁵ + 8⁴ + 8³ + 8² + 8¹+ 8⁰ =?
8⁵ + 8⁴ + 8³ + 8² + 8¹+ 8⁰ = 8⁴(8 + 1) + 8²(8³ + 1) + (8 + 1) = 9(8⁴ + 8² + 1)
= 9[8²(8² + 1)] + 9 = 9(64)(65) = 9(60 + 4)(60 + 5) + 9 = 9[9(400) + 9(60) + 20] + 9
= 32400 + 4860 + 180 + 9 = 37449

[@vijaymaths5483]

Exactly 👍