In a certain brick wall, each row of bric… | Answer

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Quantitative Aptitude

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Number

In a certain brick wall, each row of bricks above the bottom row contains one less brick than the row just below it. If there are 5 rows in all and a total of 75 bricks in that wall, how many bricks does the bottom row contain?
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ক)

খ)

গ)

ঘ)

ঙ)

None of these

Explanation

-ধরি, bottom row-তে x সংখ্যক brick আছে। -তাহলে উপরের row-গুলিতে থাকবে: (x-1), (x-2), (x-3), এবং (x-4) brick। -মোট brick সংখ্যা = x + (x-1) + (x-2) + (x-3) + (x-4) = 75 -সরল করে: 5x - 10 = 75 -5x = 85 -x = 17 *সুতরাং, bottom row-তে 17টি brick আছে। *তাই সঠিক উত্তর হল (B) 17।

One third the sum of 13 and a certain number is the same as one more than twice the number . Find out the number-If x/y > 0, which of the following must be true?Which of the following must be an integer if x is a positive integer and (4/x)+(5/x)+(6/x) is also an integer?

In a certain brick wall, each row of bricks above the bottom row contains one less brick than the row just below it. If there are 5 rows in all and a total of 75 bricks in that wall, how many bricks does the bottom row contain?Reading

In a certain brick wall, each row of bricks above the bottom row contains one less brick than the row just below it. If there are 5 rows in all and a total of 75 bricks in that wall, how many bricks does the bottom row contain?

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In a certain brick wall, each row of bricks above the bottom row contains one less brick than the row just below it. If there are 5 rows in all and a total of 75 bricks in that wall, how many bricks does the bottom row contain?
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