Math, asked by shrutivispute30, 10 months ago

find the sum of odd numbers between 20 and 200

Answers

Answered by upsccrack053
2

Answer:

odd numbers beteen 20 and 200 are 21 ,23,25,27,29,........199

199 = 21 +(n-1)2

199-21 =(n-1)2

178/2 = n-1

89+1=n ::n=90

sum =45 × (21 + 89×2)

= 45 × (21 +178)

= 45× 199

=8955

Answered by himanshi0836
1

Answer:

21+23+25+27+29+31+33+35+37+39+41+43+45+47+49+51+53+55+57+59+61+63+65+67+69+71+73+75+77+79+81+83+85+87+89+91+93+95+97+99+101+103+105+107+109+111+113+115+117+119+121+123+125+127+129+131+133+135+137+139+141+143+145+147+149+151+153+155+157+159+161+163+165+167+169+171+173+175+177+179+181+183+185+187+189+191+193+195+197+199=9900

hope it helps you..

remember to mark it as brainlist answer....

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