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whats the logic to solve these kind of problems like the one given below?

Find sum till n terms:

3.7.11.15+7.11.15.19+........................

BASE?? I herd its damn good!!
But if you have decided to drop out then i feel You can give quality time in your house itself n study as it'll be ur second attempt.
But if you wanna go for coaching centers then BASE is good.

I am class 12.I have this Brilliant tutorial material for preparing .Started preparin only from April this year. My question is the Brilliant tutorial material enough ?

If no then what are the other books i shud refer/study from?? plz answer....cos these suggestions of yours are precious for me !

Consider the time i have too... only 7-8 months!!

a = 1.2 kg
b = 5.42g = 0.00542

see its very simple
i when we add we get 1.20542 ..but in a only the first decimal figure is significant
therefor all the other figure after the second decimal are insignificant.
now we have to round off the second decimal figure 0. The digit next to it is 5 n 0 is even ... therefore it is left unaltered . Thus the answer is 1.20 kg.

hehe thanx!!!

yeah now found the answer

follow the pic.....hehehe

mm........ yeah now got the meaning of the question! hehehe LOLz!

ya then .... transfer from the 10 pint jug to their jugs!
well i dont know what exactly expected!

Good one!!!

{he fills his 5 pint jug ---------> this he pours into 4 pint jug }--------------1

remainin is 1 pint in the 5pint jug --------------> this he pours into his 10 pint jug 1
Again repeat step 1 n pour to 10 pint jug 1
so there you have one 2 pint measure!!

do the same again n pour into 10pint jug 2

so there it is !! you have distributed 2 pint to the two ladies!

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do rate me if right!

100 ³⁰⁰
300 ! = 100! (300!/100!)
(300!/100!) has 200 terms which are greater than 100
=> (300!/100!) >100²⁰⁰ -------1
100! < 100¹⁰⁰ ----------2
300! > 100³⁰⁰ --------from 1 n 2

Thank you !!!!

0<a,b,c<1 and a+b+c=1 , then prove

(1-a)/a.(1-b)/b.(1-c)/c >= 8

ok ppl
now i am in 12th . i don't go to any tuitions but i have taken correspondence from brilliant tutorials. if i study i can understand on my own.... but i started proper preparation only from April this year and i am working quite hard .... but sometimes i still get a feeling like i wont be able to complete all the portions .... Is 10 months enough to cover the portions if i put in my full effort without tuitions??

do give me some study tips so that i can complete my portions by December at the latest .....

hehe this is already asked !!