Question
I. x2 – 10x + 21 = 0 II.
y2 + 11y + 28 = 0 In each of the following questions, there are two equations. You have to solve both equations and mark the correct answer.Solution
I. x2 – 10x + 21 =0 => x2 - 7x - 3x + 21 = 0 => x(x - 7) - 3(x - 7) = 0 => (x - 7) (x - 3) = 0 => x = 7, 3 II. y2 + 11y + 28 =0 => y2 + 7y + 4y + 28 = 0 => y(y + 7) + 4(y + 7) = 0 => (y + 7) (y + 4) = 0 => y = -7, -4 Hence, x > y.
Find which one of the given words cannot be made from the letters of the given word.
‘ FORWARD ’
...Statement: Â Â Â Â Â Â Â
Some Cream are Lotion. Â Â Â Â Â Â
No Lotion is Oil. Â Â Â Â Â Â Â
No Cream is Shampoo. Â Â Â Â Â
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Which among the following words cannot be formed using the letters of the given word only once?
BIOTECHNOLOGY
Which among the following words can be formed using the letters of the given word only once?
POTASSIUM
Find which one of the given words cannot be made from the letters of the given word.
‘ ENCOURAGEMENT ’
...From the given alternative words, select the word which cannot be formed using the letters of the given word only once.
DEMOCRATIZATION
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