General Mathematics

Question: The value of `((0.137 + 0.098)^2 - (0.137 - 0.098)^2)/(0.137 xx 0.098)`is :
A
`4`

B
`0.25`

C
`.039`

D
`.235`

Note: Given Exp , `= ((a + b)^2 - (a - b)^2)/(ab)` `=( 4ab)/(ab)` `= 4`.
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Question: If `12276 ÷ 1.55 = 7920`,the value of `122.76 ÷ 15.5` is :
A
`7.092`

B
`7.92`

C
`79.02`

D
`79.2`

Note: Given , `12276/1.55` `= 7920` :. `122.76/15.5` `= 12.276/1.55` `= 12276/1.55 xx 1/1000` `= 7920/1000` `= 7.92`
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Question: If `2805 ÷ 2.55 = 1000`,then `280.5 ÷ 25.5 is equal to :
A
`1.01`

B
`1.1`

C
`.11`

D
`11`

Note: Given ,`2805/2.55 = 1000`. :.`280.5/25.5` `= 28.05/2.55` `= 2805/2.55 xx 1/100` `= 1100/100` `= 11`.
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Question: If `1/3.718 = .2689`, then the value of `1/.ooo3718` is :
A
`2689`

B
`2.689`

C
`26890`

D
`.2689`

Note: Not available
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Question: If `168 xx 54 = 9072`then .`9072 ÷ 16.8` is equal to :
A
`5.4`

B
`.54`

C
`.054`

D
`.0054`

Note: Given ,`9072/168 = 54`. `:..9072/16.8 = 9.072/168` `= 9072/168 xx 1/1000` `= 54/1000` `= .054`.
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Question: The H.C.F.of `1.75,5.6`and `7` is :
A
`.07`

B
`.7`

C
`3.5`

D
`.35`

Note: Given number with two decimal places are : `1.75,5.60` and `7.00` Without decimal places ,these numbers are : `175,560` and `700`,whose H.C.F.is `35`. :. H.C.F.of given numbers `= 0.35`.
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Question: The G.C.D.of `1.08, .36` and `.9` is :
A
`.03`

B
`.9`

C
`.18`

D
`.108`

Note: Given numbers are `1.08, .36` and `.90`. H.C.F of `108, 36` and `90` is `18`. :.H.C.F. of given numbers `= .18`
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Question: The H.C.F. of `0.54, 18`and `7.2`is :
A
`1.8`

B
`.18`

C
`.018`

D
`18`

Note: Given numbers are `0.54,1.80` and `7.20`. H.C.F.of `54,180` and `720` is `18`. :.H.C.F of given numbers `= .18`
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Question: The L.C.M of `3,2.7`and `.09` is :
A
`2.7`

B
`.27`

C
`.027`

D
`27`

Note: Given numbers are `3.00, 2.70` and `09`. L.C.M of `300, 270` and `9` is `2700`. :. L.C.M.of given numbers `= 27.00`= 27`.
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Question: `253 xx .154` is the same as :
A
`2.53 xx .00154`

B
`25.3 xx 1.54`

C
`253 xx .0154`

D
`2.53 xx .0154`

Note: Sum of decimal places in given product`= 5` Sum of decimal places in `253 xx .00154` is `5`. `:. 2.53 xx .154 = 253 xx .00154`.
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Question: The value of `((0.137 + 0.098)^2 - (0.137 - 0.098)^2)/(0.137 xx 0.098)`is :

Question: If `12276 ÷ 1.55 = 7920`,the value of `122.76 ÷ 15.5` is :

Question: If `2805 ÷ 2.55 = 1000`,then `280.5 ÷ 25.5 is equal to :

Question: If `1/3.718 = .2689`, then the value of `1/.ooo3718` is :

Question: If `168 xx 54 = 9072`then .`9072 ÷ 16.8` is equal to :

Question: The H.C.F.of `1.75,5.6`and `7` is :

Question: The G.C.D.of `1.08, .36` and `.9` is :

Question: The H.C.F. of `0.54, 18`and `7.2`is :

Question: The L.C.M of `3,2.7`and `.09` is :

Question: `253 xx .154` is the same as :