Barb is going to cover a rectangular area 8 feet by 10 feet with rectangular paving blocks that are 4 inches by 8 inches by 2 inches to make a flat patio. What is the minimum number of paving blocks she will need if all the paving blocks will face the same direction?
(Note: Barb will not cut any of the paving blocks.)

A rectangular block of wood having dimensions 3mxx2mxx1*75 m has to be painted on all its faces. The layer of paint must be 0.1 mm thick. Paint comes in cubical boxes having their edges equal to 10 cm. The minimum number of boxes of paint to be purchased is

Festival season is going in Agrabah and the people are going crazy to see various sorcerers, craftsmen etc. who are visiting the city to showcase their magic. A large crowd has gathered around a Card-master who is asking a logical riddle to the crowd. Whosoever succeeds in solving the riddle gets a reward. He arranges the cards of first 20 natural numbers and lists down the difference between two consecutive numbers (value on right card minus value on the left card) of the arrangement, which are 19 in number. The difference is given as -11 8 -7 -2 11 -4 12 -15 11 3 -13 9 -1 -3 6 -10 -3 5 9 The city is beautifully lightened up with candles and diyas and the vibes of happiness and joy were coming from all the directions. Aladdin and Abu are also enjoying the festival when they find a very interesting game of balloons. Inflated balloons are arranged in a straight line and are marked with English Upper case letters. The player can perform the following action any number of times (including zero): Choose any one of the balloons from the straight line and replace the letter on it with any other Uppercase English letter. Note that even if the replaced letter occurs S multiple times, only the chosen occur- rence of this letter is replaced. Find the sum of the minimum number of operations required to convert the given balloon line to balanced ones. Let's call a balloon line balanced if all characters that occur in this balloon line occur the same number of times. Line 1: ABAAACDHIAACKIOA (16 letters) Line 2: BBCABCDFAHABNAJHDYWGEJA (23 letters) Line 3: ABSDJAHSABDJAMDHANDHASAKIABCHD (30 letters)

If Fig. 14-67a , a rectangular block is gradually pushed facedown into a liquid . The block has height d, on the bottom and top the face area is A = 8.00 cm^(2) . Figure gives the apparent weight W_(app) of the block as a function of the depth h of its lower face . The scale on the vertical axis is set by W_a = 0.20 N . What is the density of the liquid ?

An 8 kg metal block of dimensions 16 cm xx 8 cm xx 6 cm is lying on a table with its face of largest area touching the table. If g= 10ms^(-2) , then the minimum amount of work done in making it stand with its length vertical is

An 8 kg metal block of dimensions 16 cm xx 8 cm xx 6 cm is lying on a table with its face of largest area touching the table. If g= 10ms^(-2) , then the minimum amount of work done in making it stand with its length vertical is

Mr. A lives at origin on the Cartesian plane and has his office at (4,5) His friend lives at (2,3) on the same plane. Mrs. A can go to his office travelling one block at a time either in the +y or +x direction. If all possible paths are equally likely then the probability that Mr. A passed his friends house is (shortest path for any event must be considere (a) 1/2 (b) 10/21 (c) 1/4 (d) 11/21

Mr. A lives at origin on the Cartesian plane and has his office at (4,5) His friend lives at (2,3) on the same plane. Mrs. A can go to his office travelling one block at a time either in the +y or +x direction. If all possible paths are equally likely then the probability that Mr. A passed his friends house is (shortest path for any event must be considere (a) 1/2 (b) 10/21 (c) 1/4 (d) 11/21