There are between 100 and 110 cards in a collection of cards. If they are counted out 3 at a tie, there are 2 left over, but if they are counted out 4 at a time, there is 1 left over. How many cards are in the collection ?()
A: 101
B: 103
C: 106
D: 107
E: 109
A: 101
B: 103
C: 106
D: 107
E: 109
举一反三
- A first-grade teacher use ten flash cards, numbered 1 through 10, to teach her students to order numbers correctly. She has students choose four flash cards randomly, then arrange the cards in ascending order. One day, she removes the cards numbered "2" and "4" from the deck of flash cards. On that day, how many different correct arrangements of four randomly selected cards are possible A: 70 B: 210 C: 336 D: 840 E: (E) 1,680
- 设\( {\alpha _1} = {\left( {1,2, - a, - 3} \right)^T},{\alpha _2} = {\left( { - 3,2,4,1} \right)^T} \)且\( \left( { { \alpha _1},{\alpha _2}} \right) = - 1 \),则\( a = \)( ) A: \( - {2 \over 3} \) B: \( - {3 \over 4} \) C: \( - {1 \over 4} \) D: \( {1 \over 2} \)
- Teenagers favor e-cards over traditional cards because ______. A) it's easy to keep them C) they are as cheap as paper cards B) it's not difficult to get them D) they are as traditional as paper cards A: Teenagers favor e-cards over traditional cards because ______. B: it's easy to keep them C: it's not difficult to get them D: they are as cheap as paper cards E: they are as traditional as paper cards
- Doling cards out in multiples of 12 send a message that their cards are worth much.
- The children at the kindergarten ______ from 1 to 100. A: counted on B: counted out C: counted down D: counted for