1. (75*4%)*900/(15*6)
a)
30
b)
38
c)
180
d)
45
Answer:
30
Explanation:
(75*4%)*900/(15*6)
=(75*4/100)*900/90
=3*10
=30
2. 1+2+3+......+25=?
a)
365
b)
400
c)
325
d)
100
Answer:
325
Explanation:
1+2+3+....+n=n(n+1)/2
1+2+3+...+25=(25*(25+1))/2
=25*26/2
=25*13=325
3. A*25%=B*50%, then A:B=?
a)
5:6
b)
1:2
c)
2:1
d)
5:4
Answer:
2:1
Explanation:
A*25%=B*50%
A*25/100=B*50/100
A=2B
A:B=2:1
4. (15+25)*(28/16)-(35/7)*14=?
a)
70
c)
40
d)
35
Answer:
0
Explanation:
(15+25)*(28/16)-(35/7)*14
=40*(7/4)-5*14
=70-70
=0
5. 3A=2B=5C, A:B:C=?
a)
10:15:6
b)
3:2:5
c)
6:15:10
d)
8:6:5
Answer:
10:15:6
Explanation:
3A=2B=5C
LCM OF (3,2,5) IS 30
(3A=2B=5C)/30
3A/30=2B/30=5C/30
A/10=B/15=C/6
A:B:C=10:15:6
6. (0.00025*0.0368)/(0.025*0.00368)
a)
35
b)
10
c)
25
d)
368
Answer:
10
Explanation:
(0.00025*0.0368)/(0.025*0.00368)
=(25*368*10^9)/(25*368*10^8)
=10
Read More:
7. (√1024*2)/8+144/(4*3)-(100/5)=?
a)
20
b)
12
c)
8
Answer:
0
Explanation:
(√1024*2)/8+144/(4*3)-(100/5)
=(32*2)/8+144/12-20
=64/8+12-20
=8-8
=0
8. √225+√729+√961=?
a)
73
b)
56
c)
79
d)
15
Answer:
73
Explanation:
√225+√729+√961
=15+27+31
=73
9. A*33.33%=B*14.28%, A:B=?
a)
33:14
b)
7:3
c)
3:7
d)
1:1
Answer:
3:7
Explanation:
A*33.33%=B*14.28%
33.33%=1/3, 14.28%=1/7
A/3=B/7
A:B=3:7
10. [{(5*3)+5}÷4]×√25=?
a)
15
b)
20
c)
25
d)
30
Answer:
25
Explanation:
[{(5*3)+5}÷4]×√25
=[{15+5}÷4]×√25
=[20÷4]×5
=5×5
=25