Prices of peanut packets in various places of two cities are given below. In which city, prices were more stable ?
`{:("Prices in city A",20,22,19,23,16),("Prices in city B",10,20,18,12,15):}`

The temperature of two cities A and B in a winter season are given below. Find which city is more consistent in temperature changes ?

A manufacturer produces three products x, y, z which he sells in two markets. Annual sales are indicated below: {:("Market",,"Products",),(I,"10,000","2,000","18,000"),(II,"6,000","20,000","8,000"):} (a) If unit sale prices of x, y and z are Rs. 2.50, Rs. 1.50 and Rs. 1.00, respectively, find the total revenue in each market with the help of matrix algebra. (b) If the unit costs of the above three commodities are Rs. 2.00, Rs. 1.00 and 50 paise respectively. Find the gross profit.

The electronegativity for some elements on pauline scale of different groups and periods are listed below. Plot these values against atomic number. From the pattern, explain the variation along a period and a group. 2^nd group elements : Be (1.6), Mg (1.2). Ca (1.0), Sr (1.0) Ba(0.9) 17^(th) group elements : F (4.0), CI (3.0), Br (2.8). I (2.5) 3^rd Period elements : Na(0.9), Mg(1.2), AI (1.5), Si(1.8), P(2.1), S(2.5), CI(3.0) 4^th period elements : K(0.8), Ca(1.0). Sc(1.3), Ti(1.5), V(1.6), Cr(16), Mn(1.5), Fe(1.8). Co(1.9), Ni(1.9). Cu(1.9). Zn(16), Ga(16), Ge(1.8), As(2.0), Se(2.4), Br(2.8)

A dietician wishes to mix together two kinds of food X and Y in such a way that the mix tue contains atleast 10 unitws of vitamin A 12 units of vitamin B and 8 units of vitamin c. The vitamin contents of one kg food is given below. One kg of food X costs Rs. 16 and one kg of food Y costs Rs. 20. find the least cost of the mixture which will produce the required diet.

Column I, Column II The coefficient of the two consecutive terms in the expansion of (1+x)^n will be equal, then n can be, p. 9 If 15^n+23^n is divided, by 19, then n can be, q. 10 ^10 C_0^(20)C_(10)-^(10)C_1^(18)C_(10)+^(10)C_2^(16)C_(10)- is divisible by 2^n ,t h e nn can be, r. 11 If the coefficients of T_r , T_(r+1),T_(r+2) terms of (1+x)^(14) are in A.P., then r is less than, s. 12