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विषय
मुख्य विषय
अध्याय
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Mathematics
Find the smallest square number which is divisible by each of the numbers 6, 9, and 15.
Chapter: [5] Squares and Square Roots
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Check the divisibility of 2146587 by 3.
Chapter: [16] Playing with Numbers
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Check the divisibility of 15287 by 3.
Chapter: [16] Playing with Numbers
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An aquarium is in the form of a cuboid whose external measures are 80 cm × 30 cm × 40 cm. The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed?
Chapter: [9] Mensuration
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The internal measures of a cuboidal room are 12 m × 8 m × 4 m. Find the total cost of whitewashing all four walls of a room, if the cost of whitewashing is Rs. 5 per m2. What will be the cost of whitewashing if the ceiling of the room is also whitewashed.
Chapter: [9] Mensuration
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Do the following division.
-20x4 ÷ 10x2
Chapter: [12] Factorization
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Do the following division.
7x2y2z2 ÷ 14xyz
Chapter: [12] Factorization
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Find the solution of 2x – 3 = 7.
Chapter: [2] Linear Equations in One Variable
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Solve 2y + 9 = 4
Chapter: [2] Linear Equations in One Variable
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Solve: `x/3 + 5/2 = - 3/2`.
Chapter: [2] Linear Equations in One Variable
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Solve: `15/4 - 7x = 9`.
Chapter: [2] Linear Equations in One Variable
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The additive inverse of `(-7)/19` is ______.
Chapter: [1] Rational Numbers
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– (–x) is same as ______.
Chapter: [1] Rational Numbers
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The negative of 1 is ______.
Chapter: [1] Rational Numbers
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The negative of a negative rational number is always a ______ rational number.
Chapter: [1] Rational Numbers
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The additive inverse of `1/2` is –2.
Chapter: [1] Rational Numbers
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If `x/y` is the additive inverse of `c/d`, then `x/y + c/d` = 0.
Chapter: [1] Rational Numbers
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If `x/y` is the additive inverse of `c/d`, then `x/y - c/d = 0`
Chapter: [1] Rational Numbers
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If x + y = 0, then –y is known as the negative of x, where x and y are rational numbers.
Chapter: [1] Rational Numbers
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The negative of the negative of any rational number is the number itself.
Chapter: [1] Rational Numbers
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