Hexaware Placement Paper

1)A rhombus has area 432 sq m, one diagonal is 36 cm. find other diagonal ? Ans 24 cm

2) An equilateral triangle has perimeter a cm . find its area . Ans a2/12v3

3) Average of seven numbers is 25. average of first three of them is 35 while last three of them is 20. find 4th no. Ans 10

4) Find average of all nos. which lies b/w 1 and 100 & r divisible by 7. Ans. 52.5

5) average of three numbers is 33. first one is as much more than average as third one is less than avg. Ans 33

6) Find sum of series: 1+ 0.1+0.001+0.0001+. Ans: 10/9

7) If price of t.v set is reduced by 20%, then its sale increases by 80%, find net effect on sale value Ans 44%more

8) How much a decimal of 1/3600? Ans 0.00027

9) F(x): sq root of x ,g(x) : cube root of x, then find value: f(f(x)+g(x)) Ans 1.0

10) Find loal max & min of 2 + f(2x2+ 3X +1) ?

11) Find the point which is nearest to (1,2,3)

12) Find 123 det 456

13) Integration of which is maximum for ?f(x),lim(0,1) ? a) 2x b) 2x2 c) 2x3 d)2 const fn Ans d

14) Find vector perpendicular to 2i +5j +4k Ans 2i-12j+7k

15) Speed of boat in still water is 9km/h . if boat moves upstream A to B in 2 hrs. & B to A in 1 hrs. Then find distance b/w A&B Ans 12

16) What no should be subtracted from 92555 to make it a perfect square ? Ans: 39

17) The probability of a student possessing a ball point pen in exam is 3/5 & possessing an ink pen is 2/3. find his probability of possessing at least one of them . Ans 13/15.

18) In an interview , the probability of appointing Husband is 1/5 while that of wife is ¼.find probability that only one of them get selected in interview. Ans :1/4

19) Find the probability that a five digit no formed by 1,2,3,4,5 ( not repeated) are divisible by 4. Ans : 3/20.

20) Find the probability in a group of 10 students sitting in a row , two of them always sit next to each other. Ans: (1/9) (not sure , u try urself)

21) A clock hand overtakes hour hand in 65 min the in how much time it will cover 65 time **** Ans none of all( refer to r.s . agg)

22) If no of employees are reduced by ratio x:y & their wages are increased by ratio p:q. then find the ratio to which their wages bill decreases Ans: xp: yq

23) Three sides of a triangle are given 15,11,7, find cosine of angles ? Ans : apply formula cosA= b2+c2-a2/2*c*b, cos B= a2+b2 "c2/2*a*b;

24) If a tap could fill entire tank in 18 hrs due to leakage, then in how much time tank can be emptied by leakage if tap can fill entire tank in 12 hrs without leakage?

25) Three liquids were mixed in 5:4:1 ratios. If cost per kg for ach of them is 4.50, 3.75& 5.10. Then in what price mixture should be sold to get 25% profit?

26) Two commodities have cost per kg is 4.75Rs & 3.20Rswere mixed in a certain ratio so as to make cost price of mixture as 17.75 Rs. Find the ratio Ans 4:1.