Q1. On selling a pen at 5% loss and a book at 15% gain, Karim gains Rs. 7. If he sells the pen at 5% gain and the book at 10% gain, he gains Rs. 13. W...

@neraj-naiyar Sir, Ans - 50 616 can be rewritten as 22 x 28, where 28 - 22= 6 using trial and errorSo, a + b = 28 + 22 = 50

@neraj-naiyar Sir,

@nikita-chawla

@sachin-yadav Ans – 3920 Let us first consider travelling from (1,1) to (4, 6)This means, Travelling from 1 to 4 units in the x axis -> 3 hori...

Q1. Among 100 students, x1 have birthdays in January, x2 have birthdays in February, and so on. If x0 = max (x1, x2, ..., x12), then the smallest poss...

@neraj-naiyar Sir, D = Price of Desktop and L = Price of Laptop0.2 D – 0.1 L = 2 % of 500000.2 D – 0.1 L = 10002D – L = 10000D + L = 50000Solving...

@sachin-yadav Given, f(x+2) = f(x) + f(x+1) f(11) = 91, f(15) = 617We get 91 + f(12) = f(13) Let f(12) be equal to some value ‘a’So, 91 + a = f(13)...

@neraj-naiyar Sir, Let assume its equal after N yearsVeeru’s investment after N years = 10000 + 10000 × 51005100 × NJoy’s investment after N years =...

@neraj-naiyar Sir, Let assume its equal after N yearsVeeru’s investment after N years = 10000 + 10000 × 51005100 × NJoy’s investment after N years =...

When they work alone, B needs 25% more time to finish a job than A does. They two finish the job in 13 days in the following manner: A works alone till ...

@ujjwal-dwivedi

If the selling prices of two articles is same and first article is sold at 20% profit and second article is sold at 20% loss. Find the overall profit...

@neraj-naiyar Sir, Yeh thik hai? log2[3+log3{4+log4(x-1)}]- 2= 0log2[3 + log3{4 + log4(x - 1)}] = 23 + log3{4 + log4(x - 1)} = 4 ( ∵ logaN = x...

@madhav Let ₹x be invested in the first instrument and ₹y be invested in the second instrument.The interest earned in the first instrument = 0.15 * x...