Mathematics questions
18011 published questions with worked solutions.
- If S be the sum, P the product and R be the sum of the reciprocals of n terms of a GP, then P^2 is equal to
- If the third term of a GP is P. Then, product of the first 5 terms of the GP is
- i^2+i^4+i^6+ upto (2k+1) terms, k N is
- The sum to infinity of the progression 9-3+1- 13+ is
- The first two terms of a geometric progression add upto 12. The sum of the third and the fourth terms is 48. If terms of the...
- If 1+ x+ ^2x+ upto =4+2 3, 0<x< and x 2, then x is equal toNot in JEE Main syllabus
- If G is the GM of the product of r set of observation with geometric means G_1,G_2, ,G_r respectively, then G is equal to
- If the 7^ th term of HP is 1 10 and the 12^ th term is 1 25 , then the 20^ th term is
- If 1 b-a + 1 b-c = 1a+ 1c and b a+c, then a,b,c are in
- If three real numbers a,b,c are in harmonic progression, then which of the following is true?
- If 4a^2+9b^2+16c^2=2(3ab+6bc+4ca), where a,b,c are non-zero numbers, then a,b,c are in
- If H is the harmonic mean between P and Q, then the value of HP+ HQ is
- If x,y,z are in HP, then (x+z)+ (x-2y+z) is equal to
- The 4^ th term of a HP is 35 and 8^ th term is 13, then its 6^ th term is
- If a+b 2,b, b+c 2 are in HP, then a,b,c are in
- If (0, 2 ), then x^2+x + ^2 x^2+x is always greater than or equal to
- If arithmetic mean of two positive numbers is A, their geometric mean is G and harmonic mean is H, then H is equal to
- If a^ 1/x =b^ 1/y =c^ 1/z and a,b,c are in geometrical progression, then x,y,z are in
- If H_1,H_2 are two harmonic means between two positive numbers a and b (a b), A and G are the arithmetic and geometric means...
- If a,b,c are in GP and x,y are arithmetic mean of a,b and b,c respectively, then 1x+ 1y is equal to