Wednesday 19th February 2020
CBSE Guess > Papers > Important Questions > Class X > 2014 > Mathematics > Math-index > Mathematics By Mr. Ajai Kumar Shukla
CBSE CLASS X
CLASS X MATHS (H.W)
- Use Euclid’s division lemma to show that the square of any positive integer of the form 3m or (3m+1) for some integer m.
- Prove that 2 - 3√5 is an irrational number.
- On dividing x3 - 3x2 + x + 2 by a polynomial g(x), the quotient & the remainder are x-2 & - 2x + 4 respectively. Find g(x).
- Find the value of k for which the polynomial x4 +10x3 +25x2+15x+k is exactly divisible by x+7.
- For what value of x will x4 - 3x3 + 7x2 - 8x+9 be exactly divisible by x2-x+4?
- If the polynomial x4 - 6x3 + 16x2 - 25x +10 is divided by another polynomial x2 - 2x+k the remainder comes out to be x + a. Find the values of k & a.
- Graphically find whether the pair of linear equations: 4x – 3y + 5 = 0 ; 6x-4.55 +7.5=0 is consistent or inconsistent.
- Solve :
- Solve: 10/(x +y) +4/(y –x) = -2 , 15/(x +y ) – 7/(y –x) =10
- A number consists of two digits. When it is divided by the sum of the digits, the quotient is 7.The sum of the reciprocals of the digits is 9 times the product of the reciprocals of the digits. Find the number.
- 2 men & 5boys can do a piece of work in 4 days while 4 men & 4 boys can do it in 3 days. How long would it take one man or one boy to do it?
- Taxi fare consists of a constant charge together with the charge for the distance covered. A person travelling 15km pays Rs115 for the journey & a person travelling 27km pays Rs199 for it. Find the charges one will have to pay for a journey of 50 km.
- A boat goes 30km upstream & 44km downstream in 10hrs. It can go 40km upstream & 55km downstream in 13hrs. Find the speed of the stream & that of boat in still water.
- Meena went to bank to withdraw Rs2000.She asked the cashier to give her Rs50 & Rs100 notes only. If Meena got 25 notes in all, find how many notes of Rs50 & Rs100 she got.
- Prove each of the following:
- (sec A – cos A) (cot A + tan A) = tan A secA
- (1 + cot A – cosec A)(1 + tan A + sec A) = 2
- tan2 A + cot2 A + 2 = sec2 Acosec2A
- sec4 A – sec2A = tan4 A + tan2A
CBSE Important Questions Class X Mathematics By : Mr. Ajai Kumar Shukla
Submitted By : Mr. Ajai Kumar Shukla,
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