Shake a leg. Lack of blood flow is a common reason for lack of concentration. If you’ve been sitting in one place for awhile, bounce one of your legs for a minute or two. It gets your blood flowing...
Every no. Is divisible by 1. Every even no. Is divisible by 2. If the sum of digit of a no. Is divisible by 3 then the no. Is also divisible by 3. If the last two digit is divisible by 4 then that no....
L'HOPITAL rule : Applicable to all limit problems wherein both numerator and denominator becomes either '0' or '∞' like 0/0 or ∞/∞ after substituting limiting value. As per this method,...