Swelling and pain: While these are not specific, swelling and pain of the thigh or of the calf can be signs and symptoms of deep vein clots of the thighs. Blood clots of the arteries in the thighs would cause a cold, painful, and numb foot and calf.
1 One billion is a 1 with nine zeros after it, denoted by 1,000,000,000. 2  One billion seconds is about 31 and a half years. 3  One billion pennies stacked on top of each other would make a tower almost 870 miles high.4  If you earn $45,000 a year, it would take 22,000 years to amass a fortune of one billion dollars.illions. Next up is one billion: 1  One billion is a thousand millions. 2  One billion is a 1 with nine zeros after it, denoted by 1,000,000,000. 3  One billion seconds is about 31 and a half years.
Previously in British English (but not in American English), the word billion referred to a million millions (1,000,000,000,000). However, this is no longer common, and the word has been used to mean one thousand million (1,000,000,000) for some time.,000,000,000 (one billion, short scale; one thousand million or milliard, yard, long scale) is the natural number following 999,999,999 and preceding 1,000,000,001.