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50 + 75 + 150 + 250 + 350 = ?...

50 + 75 + 150 + 250 + 350 = ?

A

578

B

587

C

785

D

875

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • 80% of 50% of 250% of 34 = ?

    A
    34
    B
    40
    C
    `42.5`
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  • An ideal organ pipe resonates at successive frequencies of 50 Hz , 150 Hz , 250 Hz , etc. ( speed of sound = 340 m//s ) The pipe is

    A
    Open at both ends and of length `3.4 m`
    B
    Open at both ends and of length `6.8 m`
    C
    Closed at one end , open at the other , and of length `1.7 m`
    D
    Closed at one end , open at the other , and of length `3.4 m`

  • 50% of 150 + 70% of 300 = ___

    A
    295
    B
    285
    C
    265
    D
    275

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