Qus The value of (1+2+3+ - +n) Where n is a the integers a
I n(n+l) )
2) n (nt? n(n+V anal
Q.46 In the given figure . DE ILBC if AD-2cm, A B = Sum and DE -3cm then BC is equal to 7.Sun 65cm 6 cm ८ E sem 3 m D hollowing is an irrational numbe CA
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