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CBSE Class 10 Answered

if in an AP.T3=12, T6=33 then find S10  
Asked by nikhilbhupathi11 | 21 Apr, 2020, 07:15: PM
answered-by-expert Expert Answer
In an AP, 
T3 = 12, T6 = 33
a + 2d = 12 ... (1)
a + 5d = 33 ... (2)
(2) - (1), we get
3d = 21
d = 7
Substituting the value of d in (1), we get
a + 14 = 12
a = -2
Answered by Renu Varma | 21 Apr, 2020, 09:53: PM

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