General Mathematics
 

  1. Question: ` (0.34bar67 + 0.13bar33)` is equal to :

    A
    `0.48`

    B
    `0.48bar01`

    C
    `0.48`

    D
    `0.48`

    Note: `0.34bar67 + 0.13bar33` `= (3467-34)/(9900) + (1333-13)/(9900)` `= (3433 + 1320)/(9900)` `= 4753/9900` `= (4801-48)/9900` `= 0.48bar01`.
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  2. Question: The sum of `bar2 .75` and `bar3 .78` is :

    A
    ` 5.53`

    B
    ` bar4 .53`

    C
    ` 1.53`

    D
    ` 1.03`

    Note: `bar2 .75 + bar3 .78` `= (-2 + 0.75) + (-3 + 0.78)` `= -5 + (0.75 + 0.78)` `= -5 + 1.53` `= - 5 + 1 + 0.53` `= -4 + 0.53` `= bar4 .53`.
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  3. Question: ` 18.2 xx 0.013 xx 5.21` is equal to :

    A
    `12.32686`

    B
    `123.2686`

    C
    `1.232686`

    D
    `0.1232686`

    Note: `182 xx 13 xx 521` `= 1232686.` Sum of deeeecimal places `= 6` `:. 18.2 xx 0.013 xx 5.21` `= 1.232686`
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  4. Question: ` (7.5 xx 0.9 xx 14.4)` is equal to :

    A
    `48.6`

    B
    `91.44`

    C
    `97.2`

    D
    `94.95`

    Note: `7.5 xx 0.9 xx 14.4` `= (75 xx 9 xx 14)/1000` `= (3 xx 9 xx 36)/10` `= 972/10` `= 97.2`.
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  5. Question: ` 3 xx 0.3 xx 0.03 xx 0.003 xx 30 = ?`

    A
    ` 0.0000243`

    B
    ` 0.000243`

    C
    ` 0.00243`

    D
    ` 0.0243`

    Note: `3 xx 3 xx 3 xx 3 xx 30` `=2430` Sum of decimal places `= 6` :.`3 xx 0.3 xx 0.03 xx 0.003 xx 30` `= .002430` `= 0.00243`.
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  6. Question: On simpifaction `1/0.04` is equal to :

    A
    `2.5`

    B
    `25`

    C
    `2/5`

    D
    `1/40`

    Note: `1/0.04` `= 100/4` `= 25`.
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  7. Question: ` (25.025 ÷ 0.025)` is equal to :

    A
    `10.01`

    B
    `100.1`

    C
    `1001`

    D
    `.1001`

    Note: `25.025/0.025` `= 25025/25` `= 1001`.
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  8. Question: ` (32 ÷ .008)` is equal to :

    A
    ` 40`

    B
    `400`

    C
    `4000`

    D
    None

    Note: `32/.0008` `= (32 xx 10000)/8` `= 40000^_`.
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  9. Question: ` (.000044 ÷ .11)` is equal to :

    A
    ` .004`

    B
    ` .04`

    C
    ` .0004`

    D
    ` .4`

    Note: `.000044/.11` `= .0044/11` `= .0004`.
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  10. Question: ` .8 xx ? = .0004`

    A
    `.005`

    B
    `.0005`

    C
    `5`

    D
    `5`

    Note: Let,`.8 xx x` `= .0004` `Then , `x`= .0004/.8` `= .004/8` `= .0005`.
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