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IPMAT/Algebra
Academic discussion and doubt solving for: Progression & Series, Inequalities, Linear Equation, Functions, Modulus, Minima & Maxima, Polynomials, Identities, Indices
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where exactly are you facing problem? be precise
when i look at the sol it's too lengthy so can you send the sol of it
we need to find a common AP
AP1 increases by 4
AP2 increases by 3
first common term is 11
this AP will increase with LCM of the common difference of both the APs
LCM(4,3)= 12
new AP= 11, 23, 35,.....
To find where it ends we'll take the smaller term between 404 and 403, that is, 403
we know that, a(n)= a + (n-1)d
403= 11 + (n-1)12
n= 33.66
number of terms cannot be in decimal therefore n=33
sum of n terms of an AP is
n/2 (2a+(n-1)d)
33/2 (22+32*12)
6699
W solution
I GOT ACKNOWLEGED BY LORD SCRAGGY!! adding this to my resume.
ayo lmao
thank you it means a lot
some questions have lengthy solutions, this doesn't mean you should skip it. some info is redundant to you if you're already aware of the concept, just leave that part.
Also how did you get the answer right if you didn't know the solution?
i take the equation wala method but it took lot of my time