Irrfan is confused as he is unable to decide how to group the below nine figures into three classes using each figure only once. Help Irrfan in doing so.
1, 5, 7; 2, 4, 6; 3, 9, 8
1, 5, 7; 4, 9, 8; 2, 3, 6
1, 5, 7; 3, 8, 9; 2, 4, 6
1, 5, 7; 2, 4, 8; 3, 6, 9
Boost your performance with adaptive practice tests
Practice every concept in the syllabus
Compare your speed and accuracy with your peers
Download the app and practice on the go