Ramya wanted to arrange 90 sweets (of dimensions 1×1) in a box. She has 5 boxes of dimensions 10×9, 9×10, 5×18, 16×5 and 18×5. Among these boxes, in which box can she NOT arrange all the sweets?
Options:
A . 10×9
B . 16×5
C . 18×5
D . 5×18
Answer: Option B : B The area occupied byone sweet will be1×1=1 sq units and she has to arrange 90 sweetsin the box. Minimum space needed by Ramya to arrange all the sweets is 90 sq units. Except for 16×5 the size of all the boxes is 90 sq units. 16×5=80 sq units so she cannot arrange all the sweetsin this box.
