Rihanna brought home 150 pens but while packing them, she misplaced some…

Rihanna brought home 150 pens but while packing them, she misplaced some of them. When her brother asked how many she had misplaced, she told him: If you count in pairs, one will remain If you count in a group of three, two will remain If you count in a group of four, three will remain If you count in a group of five, four will remain If you count in a group of six, five will remain If you count in a group of seven, nothing will remain. How many pens do you think has she misplaced ?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #46725