Question
How many numbers between 150 and 600 are divisible by
both 5 and 7?Solution
ATQ, Numbers which are multiple of both 5 and 7 are multiples of L.C.M of 5 and 7 i.e. 35 First multiple of 35 between 150 and 600 = 175 = ‘a’ Last multiple of 35 between 150 and 600 = 595 = an Common dierence = 35 = d Let, number of terms = n Using, an = a + (n – 1)d Where 595 = a + (n – 1) × d Or, 595 = 175 + (n – 1) × 35 Or, 35n – 35 = 595 – 175 = 420 So, n = (420 + 35) ÷ 35 = 13
?% of (168 ÷ 8 × 20) = 126
20% of 1500 – 75% of 200 = 125% of ?
Find the value of 16 X [(8 - 5) of 12 ÷ 4].
√196 + (0.25 × 144) + 19 = ? + 72
22 * 6 + 45% of 90 + 65% of 180 = ?
52% of 400 + √(?) = 60% of 600 - 25% of 400
(25 × 12 + 30 × 8 – 22 × 10) = ?
What will come in the place of question mark (?) in the given expression?
(240% of 175 ÷ √16) X 6 + 80% of 400 = ?3 + 179 + 42
What will come in the place of question mark (?) in the given expression?
(144 × 16 ÷ 12) × 6 = ?
808 ÷ (128)1/7 + 482 = 4 × ? + 846
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