Maths Practice Question and Answer
8 Q: If 27(x+y)3 – 8(x-y)3=(x+5y)(Ax2+By2+Cxy), then what is the value of (A+B-C)?
1124 064b90c7523047f4c71cdc3a6
64b90c7523047f4c71cdc3a6- 118false
- 216true
- 313false
- 411false
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Answer : 2. "16"
Q: In △ABC, D and E are the mid points of sides BC and AC, respectively. If AD = 10.8 cm, BE = 14.4 cm and AD and BE intersect at G at a right angle, then the area (in cm2) of △ABC is:
1123 064bfb8efc3da05b2214f4d20
64bfb8efc3da05b2214f4d20- 1103.68true
- 253.76false
- 380.64false
- 456.76false
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Answer : 1. "103.68"
Q: A person could save 20% of his income. A year later, his income increased by 25% but he could save the same amount only as before. By what percentage has his expenditure increased?
1122 06447737f883b29684408efac
6447737f883b29684408efac- 129.75%false
- 231.25%true
- 327.5%false
- 432.5%false
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Answer : 2. "31.25%"
Q: What is the product of (x + a) and (x + b)?
1122 064479518cd6ea382cf821012
64479518cd6ea382cf821012- 1x2+(a-b)x+abfalse
- 2false
x2+(a-b)x-ab
- 3true
x2+(a+b)x+ab
- 4false
x2+(a+b)x-ab
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Answer : 3. "x2+(a+b)x+ab
"
Q:Directions : Read the graph and answer the following questions.
The ratio of the average income of all the years to the average profit is
1122 0646103fff75f230a7a71f2f8
646103fff75f230a7a71f2f8- 124 : 13false
- 248 : 17true
- 312 : 7false
- 46 : 5false
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Answer : 2. "48 : 17"
Q: The LCM of two numbers is 1920 and their HCF is 16. If one of the numbers is 128, find the other number.
1121 062f11b2d06679c6dabc712d4
62f11b2d06679c6dabc712d4- 1204false
- 2240true
- 3260false
- 4320false
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Answer : 2. "240 "
Q: If p, q, r are all real numbers, then (p – q)3 + (q – r)3 + (r – p)3 is equal to
1121 06409cf3086fd4161467df084
6409cf3086fd4161467df084- 1(p – q) (q – r) (r – p)false
- 23(p – q) (q – r) (r – p)true
- 30false
- 41false
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Answer : 2. "3(p – q) (q – r) (r – p) "
Q: If the total surface area of a sphere of radius r cm is equal to the total surface area of a cube of side s cm, which of the following is true?
1121 0642c088d7ac9a186e4e789b6
642c088d7ac9a186e4e789b6- 1r > Sfalse
- 2r ≥ Sfalse
- 3r = Sfalse
- 4r < Strue
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