-The product of the reciprocal of 2 / 7 and the number whose absolute value is 2 / 21 is () A. 1 / 3 B. - 1 / 3 C. 1 out of 3 d. 4 out of 147

-The product of the reciprocal of 2 / 7 and the number whose absolute value is 2 / 21 is () A. 1 / 3 B. - 1 / 3 C. 1 out of 3 d. 4 out of 147

=-7/2×(±2/21)
=±1/3
Choose C