2. In an examination a student must answer 65% of the
questions correctly. But it was found that after answer 7
questions corretly out of the first 14, the student
qualified. What is the min no. of questions in the paper.
(a) 22 (b) 18 (c) 20 (d) Can't say
Answer Posted / abhisek das
(C) Out of 14 questions 7 are correct and he requires 65%
to pass.
As per the question to qualify he has to answer rest all
questions correctly
Let there are ?X? questions left in the paper so he has to
answer all ?X? questions to qualify.
Hence,
(7 + X)/(14 + X)=65/100
Solving we get X = 6
So the minimum number of questions in the paper is
14 + X =14 + 6 =20
| Is This Answer Correct ? | 6 Yes | 1 No |
Post New Answer View All Answers
pls send me question paper anser for clerical exam of state bank & uniun bank of india.
There are 1, 40, 00, 000 pencils of lengths ranging from 3 to 6 inches and are put up straight. The average length of 80% of pencils is 5 inches. Calculate the total length spanned by the pencils.
Fill the empty slots. Three FOOTBALL teams are there. Given below the list of maches. played won lost draw Goals for Goals against A 2 2 *0 *0 *7 1 B 2 *0 *1 1 2 4 C 2 *0 *1 *1 3 7 the slots with stars are answers.
Q1. Given a collection of points P in the plane, a 1-set is a point in P that can be separated from the rest by a line, .i.e the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P). The minimum value of n1(P) over all configurations P of 5 points in the plane in general position(.i.e no three points in P lie on a line) is
A&B fill 3 litres and 5 litres of oil in the car. C pays Rs. 8/- to A7B. How much will A get?
A can do a piece of work in 20 days, which B can do in 12 days. In 9 days B does ¾ of the work. How many days will A take to finish the remaining work?
A man how many bikes of Rs 14000 can buy by selling 2100 bikes of Rs500/- of each
a train runs first half of the distance at 40 km/hr and the remaining half at 60 km/hr. What is the average speed for the entire journey?
in 8*8 chess board what is the total number of squares refer odel
How many different 9 digit numbers can be formed from the number 223355888 by re-arranging its digits so that the odd digits occupy even position?
The first United States Solicitor General, Benjamin H. Bristow, __________________________ was born in 1832 and served in the Grant administration from 1874 to 1876. Earlier in his life, Bristow served as a lieutenant colonel in the 25th Kentucky Infantry was born in 1832 and had served in the Grant administration from 1874 to 1876. Earlier in his life, Bristow served as a lieutenant colonel born in 1832 and served in the Grant administration from 1874 to 1876. Earlier in his life, Bristow had served as a lieutenant colonel in the 25th Kentucky Infantry born in 1832 and appointee in the Grant administration from 1874 to 1875. Earlier in his life, Bristow served as a lieutenant colonel in the 25th Kentucky Infantry
find 70.56/ 11.2 =?
The sum of the digits of a two digit number is 8. When 18 is added to the number, the digits are reversed. the number?
Ravi's salary was reduced by 25%.Percentage increase to be effected to bring the salary to the original level is
A mother is 30 years older than her daughter however she will be only thrice as old as the daughter after 5 years. What is mother’s present age ?