Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: R

There are no items in this cart.
Continue Shopping
Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

Get extra R 440 off

				   1) Let a,b be the two positive numbers, where a > b and 4 x GM = 5 X HM for the nos. Then a is

A) 4b
B) 1/4 b
C) 2b
D) b

2) In the value of 100 factorial, the no. of 0s at the end is...
A) 11
B) 22
C) 23
D) 24

3) The sum of all proper divisors of 9900 is
A) 33851
B) 23952
C) 23951
D) none of these

4) In the sequence 1,2,2,3,3,3,4,4,4,4..., where n consecutive terms have value n, the 150th term is
A) 17
B) 16
C) 18
D) none of these

5)log(5c/a), log(3b/5c) and log (a/3b) are in AP, where a, b and c are in GP, then a.a.c are the lengths of the sides of

A) Isoceles Triangle
B) equilateral
C) scalene
D) none

6) The co-efficiant of x^15 in the product (1 - x) ( 1 - 2x) (1 - 4x) ( 1 - 8x) ... (1- 2^15 x) is equal to

A) 2^105 - 2^121
B) 2^121 - 2^105
C) 2^120 - 2^104
D) none of these

7) The co-efficent of x^49 in product (x - 1) (x - 3)...(x - 99) is
A) -99^2
B) 1
C) -2500
d) none of these

8)The sum of n terms of the series 1^2 + 2.2^2 + 3^2 + 2.4^2 +.... is [n(n+1)^2]/2 when n is even. What is sum when n is odd?

9)Th esolution set of mod of [(x +1 )/x] + mod of (X + 1) = (x+1)^2 / mod of (x) is

A) x>= 0
B) x > 0 and x = -1
C) X= -1 or 1
D) none of these

10) mod of [(Z - 1)/(z +1)]= 1 represents
A) circle
B) ellipse
C) a straight line
D) none of these

7 years ago


Answers : (2)


Dear Vishrant Vasvada

a,b be the two positive numbers, where a > b and

   4 x GM = 5 X HM

or 4(ab)^.5 =5*2ab/(a+b)


4(a/b)2 - 17 (a/b) +4 =0


a/b = 4


option a is correct

please post seperate question in seperate post

Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly.
 We are all IITians and here to help you in your IIT JEE preparation.

 All the best vishrant .
Askiitians Experts

7 years ago
squaring both side
one year ago

Post Your Answer

Other Related Questions on Algebra

please solve all 7 marks question in attached photo
I have solved Q3 here. Please post question one by one.
Harsh Patodia one month ago
Find numbers of ordered triplets (a, b, c) of positive integers for which LCM (a, b)=1000 LCM(b, c)=2000 and LCM (c, a)=2000
I think there are 7 ×10= 70 triplets of (a,b,c) .but i am not completely sure..pls correct me if i m wrong.
Gundeep Singh 6 days ago
The answer is given as 84 but i think the answer is wrong because everyone calculated 70 but can u explain it briefly
Shivam Raina 6 days ago
limit x tends to 0 then what is the value of 1-cosmx/1-cosnx=
Since this of form 0/0 use L Hospital rule. Differentiating numerator and denominator it becomes (m sin mx)/ (n sin nx) This is again of form 0/0 , hence differentiating again (m 2 cos mx)/ ...
Ajay 4 months ago
(1-cosmx/1-cos nx )x(1+cos nx/ 1+cos nx)= ((1-cosmx)x (1+cos nx))/(1-cos 2 nx) 1-cosmx/1-cosnx= now rationalise tends to 0 limit x =(1+cosnx-cosmx.cosnx-cosmx)/( 1-cos 2 nx)...
DEEPTHI JANGA 7 months ago
limit x tends to zero (1-cosmx)/(1-cosnx) by dividing the euation with mx and multiply with nx then you will get =limit x tends to zero (1-cosmx)/(1-cos nx)*(nx)/(mx) on re arranging we...
SREEKANTH 4 months ago
sir moje illustration 1 samaj nhi a rha pls hlp me AOI ke basic concept bale page pr
@ vishal kindly tell me the full ques or the concept name in which u have problem . be little specific , i am not able to understand your query . else ,u can also attach the perticular ques ...
Umakant biswal 14 days ago
Evaluate :- lim x → 0 (1-cosx root(cos2x))/(e^(x^2)-1)
please apply brackets appropriately wherever necessary please apply brackets appropriately wherever necessary
Divyansh Thada one month ago
Apply L-Hospital. it would become = > (0 + sinx root(cos2x) - cosx * 0.5*1/root(cos2x) * sin2x * 2)/e^(x^2) * 2x apply again . means again apply L-Hospital. if 0/0 indeterminat forms.
Vikas TU 2 months ago
View all Questions »

  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 3,000 off

Get extra R 440 off

More Questions On Algebra

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details