Question
The side of a square is 16cm. A square is formed by
joining the mid points of the sides of the square and in the same process, indefinite number of squares are being formed. Then find the sum of areas of all such infinite number of squares?Solution
Area of square1 = (16)2 = 256 Area of square2 = (8)2 = 128 Area of square3 = 64 Area of square4 = 32 Series = 256, 128, 64, 32……………………… S oo = a/(1-r)=256/(1-(1/2))=(256×2)/1=512
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which th...
Which of the following numbers will replace the question mark (?) in the given series?
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If the sign ‘×’ is interchanged with ‘÷’ and ‘–’ is interchanged with ‘+’, then what will be the value of the expression below?
...David divides 78 by half and adds 11. What number he gets at the end?
In the following question, select the missing number from the given series.
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Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance...
Three statements in this question and three related conclusions have been given to them, assuming that the statements given in the statements to be true...
Which two numbers should be interchanged to make the following equation equal?
16 + 8 × 24 ÷ 4 – 26 = 30
A statement (A) and an argument (R) are given.
Statement (A): If carbon-dioxide increases, the glaciers will melt.
Rationale (R): Earth'...
Which number will replace the question mark (?) in the following series?
17, 20, 36, 71, 135, 236, 380,?
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