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CBSE Class 10 Answered

Show that the sum of an AP whose first term is "a" second term is "b" third term is "c" ,is equal to (a+c)(b+c-2a)/2(b-a)
Asked by | 26 Feb, 2013, 14:58: PM
answered-by-expert Expert Answer
Answered by | 26 Feb, 2013, 16:43: PM

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CBSE 10 - Maths
the peth of an APq and qth term is p find its p+q(th)term
Asked by vishwanathhikkalagutti | 17 Jul, 2024, 07:25: AM
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CBSE 10 - Maths
how can I find this?
question image
Asked by lp9128437598 | 10 Jun, 2024, 10:34: AM
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CBSE 10 - Maths
The number of terms in the AP 3,6,9,12 ....,111
Asked by sahooashutosh781 | 21 May, 2024, 13:26: PM
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CBSE 10 - Maths
1.The mean weight of 9 students is 25 Kg. if one more student is joined in the group, the mean is unaltered. Find the weight of 10th student 2.If the nth term of an A.P is pn+q find its common difference.
Asked by purbashadebnath1980 | 09 Mar, 2024, 12:10: PM
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CBSE 10 - Maths
find the sum of following 6+13+20+....+97
Asked by deepikaselvam2009 | 20 Feb, 2024, 20:57: PM
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CBSE 10 - Maths
If the sum of the first n terms of an AP be n and the sum of first n terms be m then sum of its (m+n) terms is -(m+n)
Asked by keshavsinghalhapur | 16 Jan, 2024, 20:46: PM
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CBSE 10 - Maths
If the sum of first n,2n and 3n terms of an AP be S1 S2andS3 respectively then p3 S2-S1
Asked by keshavsinghalhapur | 15 Jan, 2024, 10:56: AM
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CBSE 10 - Maths
which term of the AP 3,8,13,18.....is. 78?
Asked by durgauikey7000 | 08 Dec, 2023, 20:16: PM
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CBSE 10 - Maths
A contract on construction job specifies penalty for delay of completion beyond a certain date as follows Rs. 200 for 1st, Rs. 250 for 2nd, and Rs. 300 for 3rd, so on. If contractor pays Rs. 27,750 as penalty, find the number of days for construction work delayed.
Asked by skandachiranjeevin | 06 Dec, 2023, 19:08: PM
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CBSE 10 - Maths
5,2,-1....-49 is an arithmetic progression so it has blank terms
Asked by shaikhyakub9946 | 30 Nov, 2023, 11:50: AM
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