21. X is an integer. Is X divisible by 5?
A) 2X is divisible by 5.
B) 10X is divisible by 5.
Answer:
Explanation:Here is no explanation for this answer
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22. A rectangle is inscribed in a circle and one of the diagonal is to be found, which is the radius of the circle
23. A room is 30 X 12 X 12. a spider is ont the middle of the samller wall, 1 feet from the top, and a fly is ont he middle of the opposite wall 1 feet from the bottom. what is the min distance reqd for the spider to crawl to the fly.
Answer:
Explanation:h=30; b=12; h=12;
Apply Geometry to get the minimum distance.
Mid-point [A] of side wall is at 6.
Spider [B] is at 5 from Mid-point of side wall (or) 11 from bottom (or) 1 form top.
Center point [C] of box is 15 away form the mid-point of side wall.
Then ABC is a right angled triangle.
Sides AB=5; AC=15;
Angle at A=90 degrees
BC=((AB^2)+(AC^2))^1/2
BC=15.811
Similarly,
Mid-point[D] of ooposite sidewall is at 6.
Fly [E] is at 5 from Mid-point of opposite side wall (or) 11 from top (or) 1 form bottom.
Center point [C] of box is 15 away form the mid-point of opposite side wall.
Then DEC is a right angled triangle.
Sides DE=5; DC=15;
Angle at D=90 degrees
CE=((DE^2)+(DC^2))^1/2
CE=15.811
Shortest distance from B(Spider) to E(Fly)
BE = BC + CE
BE = 31.622
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Huawei
24. Complete the series
M N J Q G ---
Answer:
Explanation:ans u
m j g =14,10,7
n q u =13,17,20
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Huawei
25. Two men A and B working together complete a piece of work which it would have taken them respectively 12 and 18 days to complete if they worked separately. They received Rs.149.25 as their payment. Find the share of A in the amount they received?
Answer:
Explanation:lcm of 12 and 18 is 36
no of untits of a is 3units
no of units of b is 2 units
then 5-->149.25
3--->?
( 3*149.25)/5
=89.55
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Huawei
26. The angle of elevation of the top of a tower 30 m high, from two points on the level ground on its opposite sides are 45 degrees and 60 degrees. What is the distance between the two points?
Answer:
Explanation:let height of the tower is 30m high....
angle of elevation of the points in the ground from the top of the tower is 30 degree and 45 degree respectively...
use tangent formula for both angles
tan 45=30m/L1
L1=30m
tan 30=30m/L2
L2=17.321
distance between the two points=L1+L2=30m+17.321m=47.321 m
The distance between the two points is 47.321 metres
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27. Ramu mixed 40% kerosene solution to 25% kerosene solution hence obtaining 30% kerosene solution. In what ratio were the both solutions mixed?
Answer:
Explanation:by alligation
40 25
30
(30-25) (40-30)
5 10
1 : 2
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28. A sequence is given. You should find out error & write correct
1, 2, 5, 10, 13, 26, 29, 48
Answer:
Explanation:1*2=2
2+3=5
5*2=10
10+3=13
13*2=26
26+3=29
29*2=58 so the last term is incorrect
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Huawei
29. After selling 144 articles a man earns a profit of cost price of 9.Find profit percentage?
Answer:
Explanation:Let CP of each article=x, then
CP of 144 articles=144x and CP of 9 articles=9x
Given, profit after selling 144 articles = 9x
So percentage profit = (9x/144x)*100 = 6.25%
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Huawei
30. If the number of pages in a 32-bit machine is 16 KB, then what is the size of the page table?
Answer:
Explanation:Since we have a virtual address space of 2^32 and page size is 2^16, we can store (2^32/2^16) = 2^16 pages.
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Huawei
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