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Maths Puzzle
Numerical Ability
Two-fifths of a certain no. decreased by three-fourths is equal to seven-eights. What is the no.?
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book Other Question
Perform the indicated operation
(-3x^4 + 4x^2 - 7x + 10) - (-2x^3 + 6x^2 - 5x + 3)
Can you help me subtract:
13/15 - 11/20
Thanks!