The integral part of a logarithm is called___ and the decimal part of a logarithm is called____
Correct
The integral part of a logarithm is called characteristic and the decimal part of a logarithm is called mantissa
Incorrect
The integral part of a logarithm is called characteristic and the decimal part of a logarithm is called mantissa
Question 2 of 25
2. Question
1 points
X,Y,Z together start a business.if X invests 3 times as much as Y invests and Y invests 2/3rd of what Z invests,then the ratio of X,Y,Z is
Correct
given,X=3Y and Y=2/3*Z
X/Y=3/1 and Y/Z=2/3
X:Y=3:1 and Y:Z=2:3
=3*2:1*2=6:2
X:Y:Z=6:2:3
Incorrect
given,X=3Y and Y=2/3*Z
X/Y=3/1 and Y/Z=2/3
X:Y=3:1 and Y:Z=2:3
=3*2:1*2=6:2
X:Y:Z=6:2:3
Question 3 of 25
3. Question
1 points
if log 2 = 0.3010 and log 3 =0.4771,then the value of log 24 is
Correct
log 24=log(2x2x2x3)
=log2+log2+log2+log3
=3 x 0.3010 + 0.4771
=0.9030+0.4771 = 1.3801
Incorrect
log 24=log(2x2x2x3)
=log2+log2+log2+log3
=3 x 0.3010 + 0.4771
=0.9030+0.4771 = 1.3801
Question 4 of 25
4. Question
1 points
There are 23 coins of Rs 1, Rs 2 and Rs 5 in a bag.if their value is Rs 43 the ratio of coins of Rs 1 and Rs 2 is 3:2.then the number of coins of Rs 1 is
Correct
total no of coins = 23
Rs 1 :Rs 2 =3:2
let no of Rs1 =3x
no of Rs2 =2x
no of Rs5 23-3x-2x=23-5x
total value of all coins is 43
3x*1+2x*2+(23-5x)5=43
3x+4x+115-25x=42
-18x=43-115
-18x=-72
x=72/18=4
no of Rs 1 coins=3x=3*4=12
Incorrect
total no of coins = 23
Rs 1 :Rs 2 =3:2
let no of Rs1 =3x
no of Rs2 =2x
no of Rs5 23-3x-2x=23-5x
total value of all coins is 43
3x*1+2x*2+(23-5x)5=43
3x+4x+115-25x=42
-18x=43-115
-18x=-72
x=72/18=4
no of Rs 1 coins=3x=3*4=12
Question 5 of 25
5. Question
1 points
If a:b=2:3,b:c=4:5 and c:d=6:7,then a:d is
Correct
a:b=2:3=a/b=2/3………(i)
b:c=4:5=b/c=4/5……….(ii)
c:d=6:7=c/d=6/7……….(iii)
multiply equation i,ii and iii
a/b*b/c*c/d=2/3*4/5*6/7=16/35
Incorrect
a:b=2:3=a/b=2/3………(i)
b:c=4:5=b/c=4/5……….(ii)
c:d=6:7=c/d=6/7……….(iii)
multiply equation i,ii and iii
a/b*b/c*c/d=2/3*4/5*6/7=16/35
Question 6 of 25
6. Question
1 points
The ratio compounded of 4:5 and sub-duplicate of a:9 is 8:15.then value of ‘a’ is
if X varies inversely as square of y and given that Y=2 for X=1, then the value of X for Y =6 will be
Correct
Incorrect
Question 9 of 25
9. Question
1 points
find 2 numbers such that the mean proportional between them is 18 and 3rd proportional between them is 144
Correct
Incorrect
Question 10 of 25
10. Question
1 points
in a film shooting , A and B received money in a certain ratio , B and C also received the money in the same ratio.if A gets rs 160000 and C gets rs 250000.find the amount received by B?
Divided 80 into two parts so that their product is maximum,then the numbers are
Correct
Incorrect
Question 17 of 25
17. Question
1 points
If x:y=2:3,then (5x+2y):(3x-y)=_____
Correct
given,x:y=2:3
let x=2k,y=3k
(5x+2y):(3x-y)=5x+2y/3x-y
=5*2k+2*3k/3*2k-3k
=10k+6k/6k-3k
=16k/3k=16:3
Incorrect
given,x:y=2:3
let x=2k,y=3k
(5x+2y):(3x-y)=5x+2y/3x-y
=5*2k+2*3k/3*2k-3k
=10k+6k/6k-3k
=16k/3k=16:3
Question 18 of 25
18. Question
1 points
if the salary of P is 25% lower than that of Q and the salary of R is 20% higher than that of Q , the ratio of the salary of R and P will be
Correct
let salary of Q = 100
salary of P = 100-25% = 75
salary of R = 100 + 20% = 120
ratio of salary R and P are 120:75=8:5
Incorrect
let salary of Q = 100
salary of P = 100-25% = 75
salary of R = 100 + 20% = 120
ratio of salary R and P are 120:75=8:5
Question 19 of 25
19. Question
1 points
A person has assets worth rs 148200. he wishes to divide if among his wife , son and daughter in the ratio 3:2:1. from this assets , the share of his son will be
Correct
persons assets worth =rs 148200
wife:son:daughter=3:2:1
sum of ratio =3+2+1=6
share of son = 2/6 x 148200 =49400
Incorrect
persons assets worth =rs 148200
wife:son:daughter=3:2:1
sum of ratio =3+2+1=6
share of son = 2/6 x 148200 =49400
Question 20 of 25
20. Question
1 points
for 3 months , the salary of a person are in the ratio 2:4:5.if the difference between the product of salaries of the 1st 2 months and last 2 months is rs 48000000, then the salary of the person for the 2nd month will be
Correct
Incorrect
Question 21 of 25
21. Question
1 points
A dealer mixes rice costing rs 13.85 per kg with rice costing rs 15.54 and sell the mixture at rs 17.60 per kg. so , he earned a profit of 14.6% on his sale price. the proportion in which he mixes the two qualities of rice is
Correct
Incorrect
Question 22 of 25
22. Question
1 points
the ratios of 3rd proportion of 12, 30 to the mean proportion of 9,25 is
Correct
Incorrect
Question 23 of 25
23. Question
1 points
what number must be added to each of the numbers 10,18,22,38 to make the number is proportion?