DIRECTION : In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as: (a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A). (b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A). (c) Assertion (A) is true but reason (R) is false. (d) Assertion (A) is false but reason (R) is true. (i) Assertion : Common difference of the AP -5, -1, 3, 7, ... is 4. Reason : Common difference of the AP a, a+d, a+2d… is given by d=2nd term-1st term. (ii) Assertion : Sum of first hundred even natural numbers divisible by 5 is 500. Reason : Sum of first n -terms of an A.P. is given by = ( + ), where = last term.
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