Answer / anilkumar

1.If 1+2+3+4+5+6+7+8+9+10=1000, then in how many places you need to change
‘+’ with ‘×’ to make the equality hold good?
Ans. 3

2.The average of 2, 7, 6 and x is 5, and average of 18, 1, 6, x and y is
10. Then y is
Ans. 20

3. P+Q+R+S is odd .At least how many of these is/are odd?
Ans. 1

4. If G(x) = Total number of factors of x, where x is a perfect square,
then G(x) is always
Ans. An odd number

5.Pawan writes all the numbers from 100 to 999. The number of zeroes that
he used is m, the number of 5’s that he uses is n and the number of 8’s
that he uses is p. What is the value of n+p-m?
Ans.380

6.P is an integer P> 883. If P-7 is a multiple of 11, then the largest
number that that will always divide (P+4) (P+15) is
Ans. 242

7. What is the highest power of 82 contained in 83!-82!?
Ans. 164

8.If a five digit natural number is added to a number made by putting the
digits of the original number in reverse order, the sum will always be
divisible by
Ans. 101

9.If n- digit natural number is added to a number made by putting the
digits of the original number in reverse order the sum is always divisible
by k where n is an even number, then k must be a multiple of
Ans. 11

10.Amit takes a loan from a bank at 18% Cl for two years. At the end of the
period, he pays back Rs. 6,962. What was the loan amount?
Ans. 5,000

11. Which of the following assures the best the best return for a sum of
Rs. 25,000 ??
Ans. 2years at 20% Cl

12.Madhu took a loan of Rs. 20,000 at 5% SI for 2years and INVESTED at
4%Cl for the same period. What is her gain/loss in the transaction ??
Ans. Rs. 368 loss

Answer / sampath

SI = 20000*5%*2 = 2000.
CI = 20000{1 + 5/100}^2 = 2200.
CI - SI = 200 profit.

SNAPDEAL QUESTIONS 1. A train is going at a speed of 60kmph towards Delhi and returned back at a speed of 30kmph. What is its average speed? ANS : (2*30*60)/(30+60) = 40kmph 2. How many different 4 letter words can be framed that have at least one vowel? ANS : 264 - 214 (total no of 4 digits words – no of words with no vowels) 3. Write an algorithm to find out a number from an array of numbers where only one number occurs once and rest all occurs twice. ANS : XOR all the numbers ,you will get the number with single occurrences . 4. Which among the following have the product of the distance between opposite sides of a regular polygon and it side equals one fourth of the area. A. hexagon B. octagon C. n=16 D. n=18 ANS : n=16.(area of regular polygon = apothem*perimeter/2 Apothem = distance between opposite sides/2 Area = (opp_side_dist * n * a )/4 Product of opp_side_dist and side of reg. polygon = opp_side_dist * a For n= 16 the ration becomes 1:4 5. Which of the following cannot be a relation between two variables? ANS = 4th diagram. 6.what will be the output of this program Void print (int n) { If (n>0) { printf(“hello”); print(n-1); } printf(“world”); } ANS : N times hello followed by N+1 times world. 7. Which among the following cannot be used for future prediction? ANS : 4th Diagram. 8. There are 25 horses. We have to find out the fastest 3 horses In one race maximum 5 horses can run. How many such races are required in minimum to get the result. ANS : 7 races (A. first run all horses = 5 races, eliminate 4th 5th of all races. B. Run horses who came 1st in those 5 races = 1 race , the horse coming first is the fastest Run horses a. 2nd and 3rd with the fastest horse (in first time race A) b. 2nd and 3rd coming horse in B. c. The horse who came 2nd with the horse(who came 2nd in race B) in race A You will have the fastest 3 horses.) 9. In a game of rolling dice you are given 2 dice and you have to roll them. Whatever is the outcome the player will win that many dollars. What should the game owner charge each player (optimum) so that he doesn’t have to bear any loss? ANS : $7 10. We have a function REV(“string”,m,n).This function is capable of reversing the caharacters in the string from mth location to nth location. e.g. REV(“abcd”,2,3)  the output will be acbd We need to swap a string from a position,e.g. SWAP(“abcdefg”,4)  output needs to be efgabcd. How can the REV function used do this. ANS : L = string length,N= position given in SWAP function. SWAP(“abcdefg”,4) = REV(REV(REV(“abcdefg”,N+1,L),1,N),1,L).

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