case 1 - when all letters are distinct then there are 6 different letters hence 6P3 = 120 Case 2 - when 1 letter repeated twice then it can be ...

now from here (4x+12 +9x+24)/ 2 = 57

1:9 ration is 10% concentration so using 5% and 100% , we have to make 10% 5 100 10 90 : 5 540 : 30 ...

Average of natural number increases by 0.5, if next natural number is added in the list example ( avg of 3,4,5 is 4. and Avg of 3,4,5,6 is 4.5)...

Correct answer combinations can be 5,4,3,2,1 or 5,3,2,1,0 when we check through 5,4,3,2,1..Then there should be atleast 2 people with 4 same answe...

first clock goes 2.5 mins ahead and second loses 1.5 mins in an hour. Effectively both clocks are at difference of 4 mins in an hour. so for 120 m...

1st year SI = PR CI= PR 2nd year SI = PR CI = PR+PR^2 Hence difference is PR^2 now if R is triples means 3R so now di...

Strength (S) =K* CSAF new strength = k*1.3*0.7*1.25*.75 CSAF = 0.8532 k*CSAF = 85.32% original Hence reduction of 14.68%

16p in 20 years means, (1+r)^20 = 16 so (1+r)^5 = 2 from here r is approx = 15% (just less than 15%) hence in 20 years Amount in simple intere...

let's say distance between 2 consecutive local trains is 60 km so in every 30 min a train passes him - relative distace travelled is 60 and so relativ...

46^23 = 23^23*2^23 = 23^3*2^3 = 67*08 = 36 similarity last 2 of 23^46 = 23^6 = 67^2 = 89 hence answer is x36-89 = 47 are last 2 digits

For exactly 4 factors . Result comes from following 2 forms 2*2---> corresponds to the number of form (a*b) where a,b are primes and 4 ---> ...

d. 1,2, and 4

by euler Re(47^6/18) =1 hence (47^(6k+R))/18 = (47^R)/18 ........(1) Where R is remainder when 57^67 is divided by 6 so R is Re(57^67)/6 = (3^67)/6...

let's say total profit is 100x after akbar gets 40x, remaining 60x is divided equally hence akbar = 30x + 40x = 70x and birbal =30x = 2100 x = 70...