Wednesday, 21 June 2017

Thursday, 15 June 2017

Geometry value putting trick


In an isosceles triangle ABC a circle passes through vertex B and touches mid-point of line AC at Q and intersects the side AB at P. Find AP: PB?

or it can be asked in this manner

ABC is an isosceles triangle in which AB = AC. A circle through B touches the side AC at D and intersect the side AB at P. If D is the midpoint of side AC, Then  Prove  AB = 4 AP.



1
A says to B when I was of your age i was three times of your age at that time  and sum of their present ages is 64 .find present Age of A?
Ans A = 40 ,B=24


 NOW Small variation in question


2
A says to B "I am twice as old as you were when I was as old as you are". The sum of their ages is 63 years. Find the difference of their ages ?
 ans 
A =36 ,B=27
difference =9



Monday, 15 May 2017

SSC CGL TIER 2 QUESTION

D and E are two points on the sides AC and BC respectively of triangle ABC such that DE = 18cm ,CE=5 cm and angle DEC = 90. If tan angle ABC =3.6, then AC:CD=


Video trick of this question

Video trick 

Thursday, 16 March 2017

TIME AND WORK FOR CAT/SSC/BANK PO
1.  To do a certain work B would take 4 times as long as A and C together and C 3 times as long as A and B together. The three men together complete the work in 5 days. How long would take B and C to complete the work?
(a) 9  days                        (b) 11.11   days            (c) 26  days                        (d) 28  days

2.   To do a certain work B would take 2 times as long as A and C together and C 3 times as long as A and B together. The three men together complete the work in 16 days. How long would take B and C to complete the work?

(a)  27  days           (b) 27  days            (c) 27.42   days                     (d) 27 days

Check video trick for such questions

Tuesday, 14 March 2017

In what ratio must a person mix three kinds of tea costing Rs.60/kg, Rs.75/kg and Rs.100 /kg so that the resultant mixture when sold at Rs.96/kg yields a profit of 20%?
  1. 1 : 2 : 4
  2. 3 : 7 : 6
  3. 1 : 4 : 2
  4. None of these








see video and try to solve this question