find the sum of all number from 60 to 350. which are divisible by 6. hence find the 15th and 35th term of that A.p.
plzz solve this question fast i will mark you as brainlist
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The no. between 60 and 350 divisible by 6 are
60, 66, ............ 348
This forms an A.P with
a = 60 , and d = 6
Tn( Last term) = a + (n-1)d
348 = 60+(n-1)6
n = 49
Sum = n/2 (a + l)
= 49/2 (60 + 6 )
= 49 × 33
= 1617
T15 = a + 14d
= 60 + 14*6
= 144
T35 = a + 34d
= 60 + 34*6
= 264
Hope this helps you
60, 66, ............ 348
This forms an A.P with
a = 60 , and d = 6
Tn( Last term) = a + (n-1)d
348 = 60+(n-1)6
n = 49
Sum = n/2 (a + l)
= 49/2 (60 + 6 )
= 49 × 33
= 1617
T15 = a + 14d
= 60 + 14*6
= 144
T35 = a + 34d
= 60 + 34*6
= 264
Hope this helps you
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