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Test # 65


1.
The least number which when divided by 5, 6, 8, 9 and 12 leaves a remainder 1 in each case, but when divided by 13 leaves no remainder, is:

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Quantitative Aptitude
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to the eye
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To the eye, the hotel looked very nice but when we entered it, it was not very good at all.

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  • Simple Science

    Waves

    Sound:
    While the disturbance which travels out from a sounding body is commonly called a wave, it is by no means like the type of wave best known to us, namely, the water wave.

    If a closely coiled heavy wire is suspended as in Figure and the weight is drawn down and then released, the coil will assume the appearance shown; there is clearly an overcrowding or condensation in some places, and a spreading out or rarefaction in other places. The pulse of condensation and rarefaction which travels the length of the wire is called a wave, although it bears little or no resemblance to the familiar water wave. Sound waves are similar to the waves formed in the stretched coil.

    Sound waves may be said to consist of a series of condensations and rarefactions, and the distance between two consecutive condensations and rarefactions may be defined as the wave length.

    FIG. - Waves in a coiled wire.


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